diff --git a/docs/roadmap.md b/docs/roadmap.md
index 805a9e8..412e7fa 100644
--- a/docs/roadmap.md
+++ b/docs/roadmap.md
@@ -15,7 +15,7 @@ Build a small complete tactical RPG loop:
 - Vite, TypeScript, and Phaser project foundation
 - Cinematic title scene with an original Taoyuan Oath background, subtle motion, menu UI, and first-input audio
 - Cinematic prologue pages with high-resolution story backgrounds, character portraits, and scenario data
-- File-based original BGM loops, local generated Korean narration/voice lines, and automatic music ducking during speech
+- File-based original orchestral BGM loops for title, prologue, oath, militia, and battle-prep scenes
 - First battle scene with a 12x12 map, terrain colors, unit placement, and movement range preview
 - Flow verification script from title to first battle
 
diff --git a/package.json b/package.json
index 836a77d..7a2105d 100644
--- a/package.json
+++ b/package.json
@@ -6,7 +6,7 @@
   "scripts": {
     "dev": "vite --host 0.0.0.0",
     "build": "tsc && vite build",
-    "generate:audio": "node scripts/generate-bgm.mjs && node scripts/generate-voice-assets.mjs",
+    "generate:audio": "node scripts/generate-bgm.mjs",
     "preview": "vite preview --host 0.0.0.0",
     "verify:flow": "node scripts/verify-flow.mjs"
   },
diff --git a/scripts/generate-bgm.mjs b/scripts/generate-bgm.mjs
index 95a8320..6d5a9d9 100644
--- a/scripts/generate-bgm.mjs
+++ b/scripts/generate-bgm.mjs
@@ -1,8 +1,7 @@
 import { mkdirSync, writeFileSync } from 'node:fs';
 import { join } from 'node:path';
 
-const sampleRate = 22050;
-const duration = 32;
+const sampleRate = 32000;
 const outputDir = 'src/assets/audio/bgm';
 
 mkdirSync(outputDir, { recursive: true });
@@ -10,103 +9,308 @@ mkdirSync(outputDir, { recursive: true });
 const tracks = [
   {
     name: 'title-theme',
-    root: 196,
-    tempo: 72,
-    drum: 0.34,
-    melody: [0, 2, 4, 7, 9, 7, 4, 2],
-    bass: [0, 0, -5, -3],
-    color: 'warm'
+    root: 45,
+    tempo: 76,
+    bars: 16,
+    progression: [
+      [0, 7, 12, 16],
+      [5, 12, 17, 21],
+      [-3, 4, 9, 12],
+      [7, 14, 19, 23]
+    ],
+    melody: [12, 14, 16, 19, 21, 19, 16, 14, 12, 16, 19, 24, 23, 19, 16, 14],
+    brass: 0.9,
+    choir: 0.3,
+    percussion: 0.55,
+    motion: 0.65,
+    color: 'heroic'
   },
   {
     name: 'story-dark',
-    root: 146.83,
-    tempo: 58,
-    drum: 0.22,
-    melody: [0, -3, 0, 2, -5, -3, 0, -7],
-    bass: [0, -7, -5, -3],
+    root: 43,
+    tempo: 62,
+    bars: 12,
+    progression: [
+      [0, 7, 10, 15],
+      [-5, 2, 7, 10],
+      [-2, 5, 9, 12],
+      [-7, 0, 5, 10]
+    ],
+    melody: [10, 7, 5, 3, 0, 3, 5, 7],
+    brass: 0.34,
+    choir: 0.42,
+    percussion: 0.22,
+    motion: 0.22,
     color: 'dark'
   },
   {
     name: 'oath-theme',
-    root: 220,
-    tempo: 66,
-    drum: 0.24,
-    melody: [0, 4, 7, 9, 12, 9, 7, 4],
-    bass: [0, -5, -3, -7],
+    root: 48,
+    tempo: 68,
+    bars: 16,
+    progression: [
+      [0, 7, 12, 16],
+      [9, 16, 21, 24],
+      [5, 12, 17, 21],
+      [7, 14, 19, 23]
+    ],
+    melody: [12, 16, 19, 21, 24, 21, 19, 16, 17, 21, 24, 28, 26, 24, 21, 19],
+    brass: 0.72,
+    choir: 0.55,
+    percussion: 0.34,
+    motion: 0.4,
     color: 'gold'
   },
   {
     name: 'militia-theme',
-    root: 174.61,
-    tempo: 82,
-    drum: 0.42,
-    melody: [0, 2, 5, 7, 9, 7, 5, 2],
-    bass: [0, -5, 0, -3],
-    color: 'earth'
+    root: 41,
+    tempo: 88,
+    bars: 16,
+    progression: [
+      [0, 7, 12, 15],
+      [5, 12, 17, 20],
+      [7, 14, 19, 22],
+      [-2, 5, 10, 14]
+    ],
+    melody: [12, 14, 15, 19, 22, 19, 15, 14, 12, 15, 19, 22, 24, 22, 19, 15],
+    brass: 0.68,
+    choir: 0.18,
+    percussion: 0.78,
+    motion: 0.82,
+    color: 'march'
   },
   {
     name: 'battle-prep',
-    root: 164.81,
-    tempo: 94,
-    drum: 0.5,
-    melody: [0, 3, 5, 7, 10, 7, 5, 3],
-    bass: [0, 0, -2, -5],
+    root: 40,
+    tempo: 96,
+    bars: 16,
+    progression: [
+      [0, 7, 10, 15],
+      [3, 10, 15, 19],
+      [-2, 5, 10, 14],
+      [-5, 2, 7, 10]
+    ],
+    melody: [12, 15, 17, 19, 22, 19, 17, 15, 12, 10, 12, 15, 17, 19, 22, 24],
+    brass: 0.86,
+    choir: 0.2,
+    percussion: 0.92,
+    motion: 0.9,
     color: 'steel'
   }
 ];
 
 for (const track of tracks) {
-  const buffer = new Float32Array(sampleRate * duration);
-  buildTrack(buffer, track);
-  normalize(buffer, 0.86);
-  writeFileSync(join(outputDir, `${track.name}.wav`), encodeWav(buffer));
+  const buffer = buildTrack(track);
+  normalize(buffer, 0.92);
+  const fileName = join(outputDir, `${track.name}.wav`);
+  writeFileSync(fileName, encodeWav(buffer));
+  console.log(`Generated ${fileName}`);
 }
 
-function buildTrack(buffer, track) {
+function buildTrack(track) {
   const beat = 60 / track.tempo;
   const bar = beat * 4;
+  const duration = bar * track.bars;
+  const buffer = new Float32Array(Math.ceil(duration * sampleRate));
 
-  for (let t = 0; t < duration; t += bar) {
-    for (let i = 0; i < 4; i += 1) {
-      const bassFreq = note(track.root, track.bass[i % track.bass.length] - 12);
-      addTone(buffer, t + i * beat, beat * 1.9, bassFreq, 0.075, 'soft');
-      addTone(buffer, t + i * beat, beat * 1.9, bassFreq * 2, 0.025, 'soft');
+  for (let barIndex = 0; barIndex < track.bars; barIndex += 1) {
+    const start = barIndex * bar;
+    const chord = track.progression[barIndex % track.progression.length];
+    const lift = 0.78 + (barIndex / Math.max(1, track.bars - 1)) * 0.34;
+    const chordNotes = chord.map((step) => track.root + step + 12);
+    const upperNotes = chord.map((step) => track.root + step + 24);
+    const bass = track.root + chord[0] - 12;
+
+    addStringSection(buffer, start, bar * 1.04, chordNotes, 0.085 * lift, track.color);
+    addChoirSection(buffer, start + beat * 0.45, bar * 0.96, upperNotes, track.choir * 0.04, track.color);
+    addLowStrings(buffer, start, bar * 1.02, bass, 0.085 * lift);
+
+    if (track.brass > 0.3) {
+      addBrassChord(buffer, start + beat * 1.85, beat * 2.0, upperNotes, track.brass * 0.058 * lift, track.color);
+    }
+
+    if (track.motion > 0.35) {
+      addOstinato(buffer, start, beat, track.root, chord, track.motion * 0.052, track.color);
+    }
+
+    if (track.percussion > 0.18) {
+      addTimpani(buffer, start, beat * 0.48, midiToFrequency(bass), track.percussion * 0.11);
+      if (barIndex % 2 === 1 || track.percussion > 0.7) {
+        addTimpani(buffer, start + beat * 2, beat * 0.38, midiToFrequency(bass + 7), track.percussion * 0.07);
+      }
+      if (track.percussion > 0.65) {
+        addWarDrum(buffer, start + beat, beat * 0.22, track.percussion * 0.08);
+        addWarDrum(buffer, start + beat * 3, beat * 0.22, track.percussion * 0.07);
+      }
+    }
+
+    if (barIndex % 4 === 3) {
+      addCymbalSwell(buffer, start + bar - beat * 1.35, beat * 1.2, 0.032 + track.percussion * 0.018);
     }
   }
 
-  for (let t = 0; t < duration; t += beat * 2) {
-    const step = Math.floor(t / (beat * 2)) % track.melody.length;
-    const freq = note(track.root, track.melody[step]);
-    addPluck(buffer, t + 0.04, beat * 1.65, freq, 0.12, track.color);
-    addPluck(buffer, t + beat * 0.95, beat * 0.9, freq * 1.5, 0.045, track.color);
+  addMelody(buffer, track, beat, bar);
+  addRoomTone(buffer, 0.012);
+  smoothEdges(buffer, sampleRate * 0.08);
+
+  return buffer;
+}
+
+function addMelody(buffer, track, beat, bar) {
+  const noteLength = beat * (track.color === 'dark' ? 1.35 : 1.05);
+  for (let i = 0; i < track.bars * 2; i += 1) {
+    const barIndex = Math.floor(i / 2);
+    const local = i % 2 === 0 ? beat * 0.18 : beat * 2.18;
+    const start = barIndex * bar + local;
+    const step = track.melody[i % track.melody.length];
+    const midi = track.root + step + 12;
+    const gain = track.color === 'dark' ? 0.045 : 0.062;
+    const profile = track.color === 'gold' ? 'flute' : track.color === 'steel' ? 'hornLead' : 'oboe';
+    addInstrument(buffer, start, noteLength, midiToFrequency(midi), gain, profile, {
+      attack: 0.05,
+      release: 0.28,
+      vibrato: 0.007
+    });
+  }
+}
+
+function addStringSection(buffer, start, duration, midiNotes, gain, color) {
+  midiNotes.forEach((midi, index) => {
+    addInstrument(buffer, start + index * 0.018, duration, midiToFrequency(midi), gain, 'strings', {
+      attack: 0.5,
+      release: 0.72,
+      vibrato: color === 'dark' ? 0.004 : 0.006
+    });
+    addInstrument(buffer, start + 0.04 + index * 0.014, duration * 0.96, midiToFrequency(midi + 12), gain * 0.38, 'stringsAir', {
+      attack: 0.62,
+      release: 0.8,
+      vibrato: 0.008
+    });
+  });
+}
+
+function addLowStrings(buffer, start, duration, midi, gain) {
+  addInstrument(buffer, start, duration, midiToFrequency(midi), gain, 'lowStrings', {
+    attack: 0.18,
+    release: 0.55,
+    vibrato: 0.003
+  });
+  addInstrument(buffer, start + 0.09, duration * 0.92, midiToFrequency(midi + 12), gain * 0.42, 'lowStrings', {
+    attack: 0.2,
+    release: 0.5,
+    vibrato: 0.004
+  });
+}
+
+function addChoirSection(buffer, start, duration, midiNotes, gain, color) {
+  if (gain <= 0) {
+    return;
   }
 
-  for (let t = 0; t < duration; t += beat) {
-    if (Math.round(t / beat) % 4 === 0) {
-      addDrum(buffer, t, 0.26, track.drum);
-    } else if (track.drum > 0.3 && Math.round(t / beat) % 2 === 0) {
-      addDrum(buffer, t, 0.16, track.drum * 0.45);
+  midiNotes.forEach((midi, index) => {
+    addInstrument(buffer, start + index * 0.03, duration, midiToFrequency(midi), gain, color === 'dark' ? 'darkChoir' : 'choir', {
+      attack: 0.75,
+      release: 0.9,
+      vibrato: 0.002
+    });
+  });
+}
+
+function addBrassChord(buffer, start, duration, midiNotes, gain, color) {
+  midiNotes.slice(0, 3).forEach((midi, index) => {
+    addInstrument(buffer, start + index * 0.012, duration, midiToFrequency(midi), gain, color === 'steel' ? 'battleBrass' : 'brass', {
+      attack: 0.2,
+      release: 0.45,
+      vibrato: 0.004
+    });
+  });
+}
+
+function addOstinato(buffer, barStart, beat, root, chord, gain, color) {
+  const pattern = [0, 2, 1, 3, 2, 1, 0, 2];
+  const profile = color === 'march' || color === 'steel' ? 'spiccato' : 'pizzicato';
+
+  for (let i = 0; i < pattern.length; i += 1) {
+    const step = chord[pattern[i] % chord.length];
+    const midi = root + step + (i % 2 === 0 ? 12 : 24);
+    addInstrument(buffer, barStart + i * beat * 0.5, beat * 0.42, midiToFrequency(midi), gain, profile, {
+      attack: 0.012,
+      release: 0.12,
+      vibrato: 0
+    });
+  }
+}
+
+function addTimpani(buffer, start, duration, baseFrequency, gain) {
+  const startIndex = Math.max(0, Math.floor(start * sampleRate));
+  const count = Math.max(1, Math.floor(duration * sampleRate));
+
+  for (let i = 0; i < count; i += 1) {
+    const index = startIndex + i;
+    if (index >= buffer.length) {
+      break;
     }
-  }
 
-  for (let t = 0; t < duration; t += bar * 2) {
-    addNoiseWash(buffer, t, bar * 1.8, track.color === 'dark' ? 0.012 : 0.007);
+    const t = i / sampleRate;
+    const env = Math.exp(-t * 8.5) * Math.min(1, t / 0.018);
+    const frequency = baseFrequency * (1.18 - Math.min(0.28, t * 1.8));
+    const drum = Math.sin(2 * Math.PI * frequency * t) + Math.sin(2 * Math.PI * frequency * 0.5 * t) * 0.45;
+    buffer[index] += drum * gain * env;
   }
+}
 
+function addWarDrum(buffer, start, duration, gain) {
+  const startIndex = Math.max(0, Math.floor(start * sampleRate));
+  const count = Math.max(1, Math.floor(duration * sampleRate));
+
+  for (let i = 0; i < count; i += 1) {
+    const index = startIndex + i;
+    if (index >= buffer.length) {
+      break;
+    }
+
+    const t = i / sampleRate;
+    const env = Math.exp(-t * 18) * Math.min(1, t / 0.01);
+    const tone = Math.sin(2 * Math.PI * (84 - t * 40) * t);
+    const grit = noise(index) * 0.35;
+    buffer[index] += (tone + grit) * gain * env;
+  }
+}
+
+function addCymbalSwell(buffer, start, duration, gain) {
+  const startIndex = Math.max(0, Math.floor(start * sampleRate));
+  const count = Math.max(1, Math.floor(duration * sampleRate));
+  let filtered = 0;
+
+  for (let i = 0; i < count; i += 1) {
+    const index = startIndex + i;
+    if (index >= buffer.length) {
+      break;
+    }
+
+    const raw = noise(index * 3 + 17);
+    filtered = filtered * 0.62 + raw * 0.38;
+    const bright = raw - filtered;
+    const t = i / count;
+    const env = Math.sin(Math.PI * t) ** 0.45;
+    buffer[index] += bright * gain * env;
+  }
+}
+
+function addRoomTone(buffer, gain) {
+  let low = 0;
   for (let i = 0; i < buffer.length; i += 1) {
-    const seconds = i / sampleRate;
-    const edge = Math.min(1, seconds / 0.6, (duration - seconds) / 0.6);
-    buffer[i] *= Math.max(0, edge);
+    low = low * 0.996 + noise(i + 991) * 0.004;
+    buffer[i] += low * gain;
   }
 }
 
-function note(root, semitone) {
-  return root * 2 ** (semitone / 12);
-}
-
-function addTone(buffer, start, length, freq, gain, shape) {
-  const startIndex = Math.floor(start * sampleRate);
-  const count = Math.floor(length * sampleRate);
+function addInstrument(buffer, start, duration, frequency, gain, profile, options) {
+  const startIndex = Math.max(0, Math.floor(start * sampleRate));
+  const count = Math.max(1, Math.floor(duration * sampleRate));
+  const attack = options.attack ?? 0.04;
+  const release = options.release ?? 0.2;
+  const vibratoDepth = options.vibrato ?? 0.004;
 
   for (let i = 0; i < count; i += 1) {
     const index = startIndex + i;
@@ -115,72 +319,92 @@ function addTone(buffer, start, length, freq, gain, shape) {
     }
 
     const t = i / sampleRate;
-    const env = Math.sin(Math.PI * Math.min(1, i / count));
-    const wave = Math.sin(2 * Math.PI * freq * t) + Math.sin(2 * Math.PI * freq * 2 * t) * 0.18;
-    buffer[index] += wave * gain * env * (shape === 'soft' ? 0.78 : 1);
-  }
-}
-
-function addPluck(buffer, start, length, freq, gain, color) {
-  const startIndex = Math.floor(start * sampleRate);
-  const count = Math.floor(length * sampleRate);
-  const brightness = color === 'gold' ? 0.36 : color === 'steel' ? 0.42 : 0.28;
-
-  for (let i = 0; i < count; i += 1) {
-    const index = startIndex + i;
-    if (index >= buffer.length) {
-      break;
-    }
-
-    const t = i / sampleRate;
-    const env = Math.exp(-t * 4.8) * Math.min(1, t / 0.02);
-    const wave =
-      Math.sin(2 * Math.PI * freq * t) +
-      Math.sin(2 * Math.PI * freq * 2 * t) * brightness +
-      Math.sin(2 * Math.PI * freq * 3 * t) * 0.14;
+    const env = envelope(t, duration, attack, release);
+    const vibrato = 1 + Math.sin(2 * Math.PI * 5.1 * t) * vibratoDepth;
+    const wave = instrumentWave(profile, frequency * vibrato, t, index);
     buffer[index] += wave * gain * env;
   }
 }
 
-function addDrum(buffer, start, length, gain) {
-  const startIndex = Math.floor(start * sampleRate);
-  const count = Math.floor(length * sampleRate);
-  let seed = 1337 + startIndex;
+function instrumentWave(profile, frequency, t, index) {
+  const phase = 2 * Math.PI * frequency * t;
 
-  for (let i = 0; i < count; i += 1) {
-    const index = startIndex + i;
-    if (index >= buffer.length) {
-      break;
-    }
+  if (profile === 'strings') {
+    return (
+      Math.sin(phase) * 0.78 +
+      Math.sin(phase * 2.01) * 0.25 +
+      Math.sin(phase * 3.02) * 0.12 +
+      Math.sin(phase * 0.997) * 0.18
+    );
+  }
 
-    const t = i / sampleRate;
-    const env = Math.exp(-t * 15);
-    const freq = 96 - t * 120;
-    seed = (seed * 1664525 + 1013904223) >>> 0;
-    const noise = ((seed / 0xffffffff) * 2 - 1) * 0.18;
-    const wave = Math.sin(2 * Math.PI * Math.max(42, freq) * t) + noise;
-    buffer[index] += wave * gain * env;
+  if (profile === 'stringsAir') {
+    return Math.sin(phase) * 0.64 + Math.sin(phase * 2) * 0.16 + noise(index) * 0.035;
+  }
+
+  if (profile === 'lowStrings') {
+    return Math.sin(phase) * 0.82 + Math.sin(phase * 2) * 0.2 + Math.sin(phase * 3) * 0.08;
+  }
+
+  if (profile === 'brass' || profile === 'battleBrass') {
+    const bite = profile === 'battleBrass' ? 0.24 : 0.15;
+    return Math.tanh(
+      Math.sin(phase) * 1.1 +
+      Math.sin(phase * 2) * 0.42 +
+      Math.sin(phase * 3) * bite +
+      Math.sin(phase * 4) * 0.08
+    );
+  }
+
+  if (profile === 'choir' || profile === 'darkChoir') {
+    const hollow = profile === 'darkChoir' ? 0.32 : 0.22;
+    return Math.sin(phase) * 0.62 + Math.sin(phase * 1.5) * hollow + Math.sin(phase * 2) * 0.12;
+  }
+
+  if (profile === 'flute') {
+    return Math.sin(phase) * 0.78 + Math.sin(phase * 2) * 0.08 + noise(index) * 0.018;
+  }
+
+  if (profile === 'hornLead') {
+    return Math.sin(phase) * 0.72 + Math.sin(phase * 2) * 0.25 + Math.sin(phase * 3) * 0.11;
+  }
+
+  if (profile === 'oboe') {
+    return Math.sin(phase) * 0.66 + Math.sin(phase * 2) * 0.28 + Math.sin(phase * 3) * 0.1;
+  }
+
+  if (profile === 'spiccato') {
+    return Math.sin(phase) * 0.72 + Math.sin(phase * 2) * 0.2 + noise(index) * 0.025;
+  }
+
+  return Math.sin(phase) * 0.7 + Math.sin(phase * 2) * 0.16;
+}
+
+function envelope(t, duration, attack, release) {
+  const attackLevel = attack <= 0 ? 1 : Math.min(1, t / attack);
+  const releaseLevel = release <= 0 ? 1 : Math.min(1, (duration - t) / release);
+  return Math.max(0, Math.min(1, attackLevel, releaseLevel));
+}
+
+function smoothEdges(buffer, samples) {
+  for (let i = 0; i < Math.min(samples, buffer.length); i += 1) {
+    const edge = i / samples;
+    const fade = Math.sin(edge * Math.PI * 0.5);
+    buffer[i] *= fade;
+    buffer[buffer.length - 1 - i] *= fade;
   }
 }
 
-function addNoiseWash(buffer, start, length, gain) {
-  const startIndex = Math.floor(start * sampleRate);
-  const count = Math.floor(length * sampleRate);
-  let seed = 4219 + startIndex;
-  let previous = 0;
+function midiToFrequency(midi) {
+  return 440 * 2 ** ((midi - 69) / 12);
+}
 
-  for (let i = 0; i < count; i += 1) {
-    const index = startIndex + i;
-    if (index >= buffer.length) {
-      break;
-    }
-
-    seed = (seed * 1103515245 + 12345) >>> 0;
-    const raw = (seed / 0xffffffff) * 2 - 1;
-    previous = previous * 0.98 + raw * 0.02;
-    const env = Math.sin(Math.PI * i / count);
-    buffer[index] += previous * gain * env;
-  }
+function noise(index) {
+  let value = (index * 1664525 + 1013904223) >>> 0;
+  value ^= value << 13;
+  value ^= value >>> 17;
+  value ^= value << 5;
+  return (value >>> 0) / 0xffffffff * 2 - 1;
 }
 
 function normalize(buffer, target) {
diff --git a/scripts/generate-voice-assets.mjs b/scripts/generate-voice-assets.mjs
deleted file mode 100644
index 430c3e1..0000000
--- a/scripts/generate-voice-assets.mjs
+++ /dev/null
@@ -1,127 +0,0 @@
-import { mkdirSync } from 'node:fs';
-import { resolve } from 'node:path';
-import { spawnSync } from 'node:child_process';
-
-const outputDir = resolve('src/assets/audio/voice/prologue');
-
-mkdirSync(outputDir, { recursive: true });
-
-const voiceName = 'Microsoft Heami Desktop';
-
-const lines = [
-  {
-    name: 'yellow-turban-chaos',
-    role: 'narrator',
-    rate: -2,
-    volume: 86,
-    text: '중평 원년, 황건의 깃발이 각지에서 일어섰다. 관군은 흩어지고, 마을마다 불안한 소문이 번져갔다.'
-  },
-  {
-    name: 'liu-bei-resolve',
-    role: 'liuBei',
-    rate: -1,
-    volume: 92,
-    text: '천실의 백성이 이토록 고통받는데, 어찌 초개처럼 그늘에 숨어 있을 수 있겠는가.'
-  },
-  {
-    name: 'zhang-fei-joins',
-    role: 'zhangFei',
-    rate: 1,
-    volume: 100,
-    text: '좋소! 나라를 바로잡고 백성을 구한다면, 내 재산과 힘을 모두 아끼지 않겠소.'
-  },
-  {
-    name: 'guan-yu-joins',
-    role: 'guanYu',
-    rate: -3,
-    volume: 95,
-    text: '서로의 뜻을 믿고 의로운 길을 함께한다면, 천 리라도 멀다 하지 않겠습니다.'
-  },
-  {
-    name: 'oath-narration',
-    role: 'narrator',
-    rate: -2,
-    volume: 88,
-    text: '복사꽃 향기가 흩날리는 동산에서 세 사람은 하늘과 땅 앞에 고했다.'
-  },
-  {
-    name: 'oath-liu-bei',
-    role: 'liuBei',
-    rate: -1,
-    volume: 94,
-    text: '우리는 태어난 날은 달라도, 오늘부터 뜻을 함께한다. 백성을 구하고 천하를 바로 세우는 길에서 물러서지 않겠다.'
-  },
-  {
-    name: 'oath-brothers',
-    role: 'guanYu',
-    rate: -3,
-    volume: 96,
-    text: '의리를 저버리지 않고, 형제를 저버리지 않겠습니다.'
-  },
-  {
-    name: 'militia-rises',
-    role: 'zhangFei',
-    rate: 1,
-    volume: 100,
-    text: '창을 들 사람은 앞으로 나오시오! 오늘 모인 이름 없는 무리가 내일의 방패가 될 것이오!'
-  },
-  {
-    name: 'first-sortie',
-    role: 'liuBei',
-    rate: -1,
-    volume: 94,
-    text: '우리는 아직 작다. 그러나 오늘 한 마을을 지켜낸다면, 그 뜻은 천하로 번져갈 것이다.'
-  },
-  {
-    name: 'battle-briefing',
-    role: 'narrator',
-    rate: -2,
-    volume: 88,
-    text: '의용군은 마을 입구로 향했다. 첫 전투가 곧 시작된다.'
-  }
-];
-
-for (const line of lines) {
-  const output = resolve(outputDir, `${line.name}.wav`);
-  generateVoice({ ...line, output });
-}
-
-function generateVoice(item) {
-  const payload = Buffer.from(JSON.stringify({ ...item, voiceName }), 'utf8').toString('base64');
-  const powershell = `
-$ErrorActionPreference = 'Stop'
-$ProgressPreference = 'SilentlyContinue'
-Add-Type -AssemblyName System.Speech
-$payload = '${payload}'
-$json = [System.Text.Encoding]::UTF8.GetString([System.Convert]::FromBase64String($payload))
-$item = $json | ConvertFrom-Json
-$synth = New-Object System.Speech.Synthesis.SpeechSynthesizer
-try {
-  try {
-    $synth.SelectVoice($item.voiceName)
-  } catch {
-    $installed = $synth.GetInstalledVoices() | ForEach-Object { $_.VoiceInfo.Name }
-    if ($installed.Count -gt 0) {
-      $synth.SelectVoice($installed[0])
-    }
-  }
-  $synth.Rate = [int]$item.rate
-  $synth.Volume = [int]$item.volume
-  $synth.SetOutputToWaveFile($item.output)
-  $synth.Speak($item.text)
-} finally {
-  $synth.Dispose()
-}
-`;
-
-  const encodedCommand = Buffer.from(powershell, 'utf16le').toString('base64');
-  const result = spawnSync(
-    'powershell.exe',
-    ['-NoProfile', '-ExecutionPolicy', 'Bypass', '-EncodedCommand', encodedCommand],
-    { stdio: 'inherit' }
-  );
-
-  if (result.status !== 0) {
-    throw new Error(`Failed to generate voice asset: ${item.name}`);
-  }
-}
diff --git a/src/assets/audio/bgm/battle-prep.wav b/src/assets/audio/bgm/battle-prep.wav
index e5cf201..8f48e5f 100644
Binary files a/src/assets/audio/bgm/battle-prep.wav and b/src/assets/audio/bgm/battle-prep.wav differ
diff --git a/src/assets/audio/bgm/militia-theme.wav b/src/assets/audio/bgm/militia-theme.wav
index b2acdf1..1d036e0 100644
Binary files a/src/assets/audio/bgm/militia-theme.wav and b/src/assets/audio/bgm/militia-theme.wav differ
diff --git a/src/assets/audio/bgm/oath-theme.wav b/src/assets/audio/bgm/oath-theme.wav
index b3abc29..6fa1a14 100644
Binary files a/src/assets/audio/bgm/oath-theme.wav and b/src/assets/audio/bgm/oath-theme.wav differ
diff --git a/src/assets/audio/bgm/story-dark.wav b/src/assets/audio/bgm/story-dark.wav
index c48e7d3..63c94ad 100644
Binary files a/src/assets/audio/bgm/story-dark.wav and b/src/assets/audio/bgm/story-dark.wav differ
diff --git a/src/assets/audio/bgm/title-theme.wav b/src/assets/audio/bgm/title-theme.wav
index 4b1456c..da85c09 100644
Binary files a/src/assets/audio/bgm/title-theme.wav and b/src/assets/audio/bgm/title-theme.wav differ
diff --git a/src/assets/audio/voice/prologue/battle-briefing.wav b/src/assets/audio/voice/prologue/battle-briefing.wav
deleted file mode 100644
index 7cf1e5c..0000000
Binary files a/src/assets/audio/voice/prologue/battle-briefing.wav and /dev/null differ
diff --git a/src/assets/audio/voice/prologue/first-sortie.wav b/src/assets/audio/voice/prologue/first-sortie.wav
deleted file mode 100644
index a897440..0000000
Binary files a/src/assets/audio/voice/prologue/first-sortie.wav and /dev/null differ
diff --git a/src/assets/audio/voice/prologue/guan-yu-joins.wav b/src/assets/audio/voice/prologue/guan-yu-joins.wav
deleted file mode 100644
index 8b13ec6..0000000
Binary files a/src/assets/audio/voice/prologue/guan-yu-joins.wav and /dev/null differ
diff --git a/src/assets/audio/voice/prologue/liu-bei-resolve.wav b/src/assets/audio/voice/prologue/liu-bei-resolve.wav
deleted file mode 100644
index b76dc70..0000000
Binary files a/src/assets/audio/voice/prologue/liu-bei-resolve.wav and /dev/null differ
diff --git a/src/assets/audio/voice/prologue/militia-rises.wav b/src/assets/audio/voice/prologue/militia-rises.wav
deleted file mode 100644
index 952dfa6..0000000
Binary files a/src/assets/audio/voice/prologue/militia-rises.wav and /dev/null differ
diff --git a/src/assets/audio/voice/prologue/oath-brothers.wav b/src/assets/audio/voice/prologue/oath-brothers.wav
deleted file mode 100644
index 92ea777..0000000
Binary files a/src/assets/audio/voice/prologue/oath-brothers.wav and /dev/null differ
diff --git a/src/assets/audio/voice/prologue/oath-liu-bei.wav b/src/assets/audio/voice/prologue/oath-liu-bei.wav
deleted file mode 100644
index 3df5802..0000000
Binary files a/src/assets/audio/voice/prologue/oath-liu-bei.wav and /dev/null differ
diff --git a/src/assets/audio/voice/prologue/oath-narration.wav b/src/assets/audio/voice/prologue/oath-narration.wav
deleted file mode 100644
index 2199a55..0000000
Binary files a/src/assets/audio/voice/prologue/oath-narration.wav and /dev/null differ
diff --git a/src/assets/audio/voice/prologue/yellow-turban-chaos.wav b/src/assets/audio/voice/prologue/yellow-turban-chaos.wav
deleted file mode 100644
index 6cd689c..0000000
Binary files a/src/assets/audio/voice/prologue/yellow-turban-chaos.wav and /dev/null differ
diff --git a/src/assets/audio/voice/prologue/zhang-fei-joins.wav b/src/assets/audio/voice/prologue/zhang-fei-joins.wav
deleted file mode 100644
index 46f21a0..0000000
Binary files a/src/assets/audio/voice/prologue/zhang-fei-joins.wav and /dev/null differ
diff --git a/src/game/audio/SoundDirector.ts b/src/game/audio/SoundDirector.ts
index 048fc3e..0d87452 100644
--- a/src/game/audio/SoundDirector.ts
+++ b/src/game/audio/SoundDirector.ts
@@ -1,18 +1,4 @@
 type AudioTrackMap = Record<string, string>;
-export type VoiceRole = 'narrator' | 'liuBei' | 'guanYu' | 'zhangFei';
-
-type PitchSafeAudio = HTMLAudioElement & {
-  preservesPitch?: boolean;
-  mozPreservesPitch?: boolean;
-  webkitPreservesPitch?: boolean;
-};
-
-const rolePlayback: Record<VoiceRole, { rate: number; volume: number }> = {
-  narrator: { rate: 0.98, volume: 0.9 },
-  liuBei: { rate: 0.96, volume: 0.92 },
-  guanYu: { rate: 0.84, volume: 0.95 },
-  zhangFei: { rate: 1.05, volume: 1 }
-};
 
 class SoundDirector {
   private context?: AudioContext;
@@ -20,24 +6,16 @@ class SoundDirector {
   private started = false;
   private muted = false;
   private musicTracks: AudioTrackMap = {};
-  private voiceTracks: AudioTrackMap = {};
   private music?: HTMLAudioElement;
-  private voice?: HTMLAudioElement;
   private currentMusicKey?: string;
   private pendingMusicKey?: string;
   private musicFadeTimer?: number;
-  private musicRampTimer?: number;
-  private readonly musicVolume = 0.46;
-  private readonly duckedMusicVolume = 0.18;
+  private readonly musicVolume = 0.56;
 
   registerMusicTracks(tracks: AudioTrackMap) {
     this.musicTracks = tracks;
   }
 
-  registerVoiceTracks(tracks: AudioTrackMap) {
-    this.voiceTracks = tracks;
-  }
-
   start() {
     if (this.started) {
       this.resume();
@@ -74,9 +52,6 @@ class SoundDirector {
     if (this.music) {
       this.music.muted = muted;
     }
-    if (this.voice) {
-      this.voice.muted = muted;
-    }
 
     if (!this.context || !this.master) {
       return;
@@ -130,64 +105,7 @@ class SoundDirector {
     this.music = next;
     this.currentMusicKey = key;
     void next.play().catch(() => undefined);
-    this.fadeMusic(previous, next, this.voice ? this.duckedMusicVolume : this.musicVolume);
-  }
-
-  playVoice(key?: string, role: VoiceRole = 'narrator') {
-    if (!key || !this.started) {
-      this.stopVoice();
-      return;
-    }
-    this.stopVoice(false);
-
-    const src = this.voiceTracks[key];
-    if (!src) {
-      return;
-    }
-
-    const profile = rolePlayback[role] ?? rolePlayback.narrator;
-    const voice = new Audio(src) as PitchSafeAudio;
-    voice.preload = 'auto';
-    voice.muted = this.muted;
-    voice.volume = profile.volume;
-    voice.playbackRate = profile.rate;
-    voice.preservesPitch = false;
-    voice.mozPreservesPitch = false;
-    voice.webkitPreservesPitch = false;
-    voice.addEventListener('ended', () => {
-      if (this.voice === voice) {
-        this.voice = undefined;
-        this.duckMusic(false);
-      }
-    });
-    voice.addEventListener('error', () => {
-      if (this.voice === voice) {
-        this.voice = undefined;
-        this.duckMusic(false);
-      }
-    });
-
-    this.voice = voice;
-    this.duckMusic(true);
-    void voice.play().catch(() => {
-      if (this.voice === voice) {
-        this.voice = undefined;
-        this.duckMusic(false);
-      }
-    });
-  }
-
-  stopVoice(restoreMusic = true) {
-    if (!this.voice) {
-      return;
-    }
-
-    this.voice.pause();
-    this.voice.currentTime = 0;
-    this.voice = undefined;
-    if (restoreMusic) {
-      this.duckMusic(false);
-    }
+    this.fadeMusic(previous, next, this.musicVolume);
   }
 
   private playTone(
@@ -246,38 +164,6 @@ class SoundDirector {
     }, 32);
   }
 
-  private duckMusic(ducked: boolean) {
-    if (!this.music) {
-      return;
-    }
-
-    if (ducked && this.musicFadeTimer) {
-      window.clearInterval(this.musicFadeTimer);
-      this.musicFadeTimer = undefined;
-    }
-
-    if (this.musicRampTimer) {
-      window.clearInterval(this.musicRampTimer);
-    }
-
-    const from = this.music.volume;
-    const to = ducked ? this.duckedMusicVolume : this.musicVolume;
-    const duration = 260;
-    const startedAt = performance.now();
-
-    this.musicRampTimer = window.setInterval(() => {
-      if (!this.music) {
-        return;
-      }
-
-      const progress = Math.min(1, (performance.now() - startedAt) / duration);
-      this.music.volume = from + (to - from) * progress;
-      if (progress >= 1 && this.musicRampTimer) {
-        window.clearInterval(this.musicRampTimer);
-        this.musicRampTimer = undefined;
-      }
-    }, 32);
-  }
 }
 
 declare global {
diff --git a/src/game/audio/audioAssets.ts b/src/game/audio/audioAssets.ts
index ac864ff..2ddc3ce 100644
--- a/src/game/audio/audioAssets.ts
+++ b/src/game/audio/audioAssets.ts
@@ -3,16 +3,6 @@ import militiaThemeUrl from '../../assets/audio/bgm/militia-theme.wav';
 import oathThemeUrl from '../../assets/audio/bgm/oath-theme.wav';
 import storyDarkUrl from '../../assets/audio/bgm/story-dark.wav';
 import titleThemeUrl from '../../assets/audio/bgm/title-theme.wav';
-import battleBriefingVoiceUrl from '../../assets/audio/voice/prologue/battle-briefing.wav';
-import firstSortieVoiceUrl from '../../assets/audio/voice/prologue/first-sortie.wav';
-import guanYuJoinsVoiceUrl from '../../assets/audio/voice/prologue/guan-yu-joins.wav';
-import liuBeiResolveVoiceUrl from '../../assets/audio/voice/prologue/liu-bei-resolve.wav';
-import militiaRisesVoiceUrl from '../../assets/audio/voice/prologue/militia-rises.wav';
-import oathBrothersVoiceUrl from '../../assets/audio/voice/prologue/oath-brothers.wav';
-import oathLiuBeiVoiceUrl from '../../assets/audio/voice/prologue/oath-liu-bei.wav';
-import oathNarrationVoiceUrl from '../../assets/audio/voice/prologue/oath-narration.wav';
-import yellowTurbanChaosVoiceUrl from '../../assets/audio/voice/prologue/yellow-turban-chaos.wav';
-import zhangFeiJoinsVoiceUrl from '../../assets/audio/voice/prologue/zhang-fei-joins.wav';
 
 export const musicTracks = {
   'title-theme': titleThemeUrl,
@@ -22,18 +12,4 @@ export const musicTracks = {
   'battle-prep': battlePrepUrl
 } as const;
 
-export const voiceTracks = {
-  'yellow-turban-chaos': yellowTurbanChaosVoiceUrl,
-  'liu-bei-resolve': liuBeiResolveVoiceUrl,
-  'zhang-fei-joins': zhangFeiJoinsVoiceUrl,
-  'guan-yu-joins': guanYuJoinsVoiceUrl,
-  'oath-narration': oathNarrationVoiceUrl,
-  'oath-liu-bei': oathLiuBeiVoiceUrl,
-  'oath-brothers': oathBrothersVoiceUrl,
-  'militia-rises': militiaRisesVoiceUrl,
-  'first-sortie': firstSortieVoiceUrl,
-  'battle-briefing': battleBriefingVoiceUrl
-} as const;
-
 export type MusicTrackKey = keyof typeof musicTracks;
-export type VoiceTrackKey = keyof typeof voiceTracks;
diff --git a/src/game/data/scenario.ts b/src/game/data/scenario.ts
index 5db25f9..32b774b 100644
--- a/src/game/data/scenario.ts
+++ b/src/game/data/scenario.ts
@@ -1,5 +1,4 @@
 export type PortraitKey = 'liuBei' | 'guanYu' | 'zhangFei';
-export type VoiceRole = 'narrator' | PortraitKey;
 
 export type StoryPage = {
   id: string;
@@ -8,8 +7,6 @@ export type StoryPage = {
   speaker?: string;
   portrait?: PortraitKey;
   bgm?: string;
-  voice?: string;
-  voiceRole?: VoiceRole;
   text: string;
 };
 
@@ -38,8 +35,6 @@ export const prologuePages: StoryPage[] = [
   {
     id: 'yellow-turban-chaos',
     bgm: 'story-dark',
-    voice: 'yellow-turban-chaos',
-    voiceRole: 'narrator',
     chapter: '난세의 시작',
     background: 'story-chaos',
     text: '중평 원년, 황건의 깃발이 각지에서 일어났다. 관군은 흩어지고, 마을마다 피난 행렬이 이어졌다.'
@@ -47,8 +42,6 @@ export const prologuePages: StoryPage[] = [
   {
     id: 'liu-bei-resolve',
     bgm: 'story-dark',
-    voice: 'liu-bei-resolve',
-    voiceRole: 'liuBei',
     chapter: '탁현의 방',
     background: 'story-liu-bei',
     speaker: '유비',
@@ -58,8 +51,6 @@ export const prologuePages: StoryPage[] = [
   {
     id: 'zhang-fei-joins',
     bgm: 'story-dark',
-    voice: 'zhang-fei-joins',
-    voiceRole: 'zhangFei',
     chapter: '뜻이 모이다',
     background: 'story-three-heroes',
     speaker: '장비',
@@ -69,8 +60,6 @@ export const prologuePages: StoryPage[] = [
   {
     id: 'guan-yu-joins',
     bgm: 'story-dark',
-    voice: 'guan-yu-joins',
-    voiceRole: 'guanYu',
     chapter: '뜻이 모이다',
     background: 'story-three-heroes',
     speaker: '관우',
@@ -80,8 +69,6 @@ export const prologuePages: StoryPage[] = [
   {
     id: 'oath-narration',
     bgm: 'oath-theme',
-    voice: 'oath-narration',
-    voiceRole: 'narrator',
     chapter: '도원결의',
     background: 'title-taoyuan',
     text: '복숭아꽃이 흩날리는 동산에서 세 사람은 하늘과 땅에 고했다.'
@@ -89,8 +76,6 @@ export const prologuePages: StoryPage[] = [
   {
     id: 'oath-liu-bei',
     bgm: 'oath-theme',
-    voice: 'oath-liu-bei',
-    voiceRole: 'liuBei',
     chapter: '도원결의',
     background: 'title-taoyuan',
     speaker: '유비',
@@ -100,8 +85,6 @@ export const prologuePages: StoryPage[] = [
   {
     id: 'oath-brothers',
     bgm: 'oath-theme',
-    voice: 'oath-brothers',
-    voiceRole: 'guanYu',
     chapter: '도원결의',
     background: 'title-taoyuan',
     speaker: '관우',
@@ -111,8 +94,6 @@ export const prologuePages: StoryPage[] = [
   {
     id: 'militia-rises',
     bgm: 'militia-theme',
-    voice: 'militia-rises',
-    voiceRole: 'zhangFei',
     chapter: '의용군 모집',
     background: 'story-militia',
     speaker: '장비',
@@ -122,8 +103,6 @@ export const prologuePages: StoryPage[] = [
   {
     id: 'first-sortie',
     bgm: 'battle-prep',
-    voice: 'first-sortie',
-    voiceRole: 'liuBei',
     chapter: '첫 출진',
     background: 'story-sortie',
     speaker: '유비',
@@ -133,8 +112,6 @@ export const prologuePages: StoryPage[] = [
   {
     id: 'battle-briefing',
     bgm: 'battle-prep',
-    voice: 'battle-briefing',
-    voiceRole: 'narrator',
     chapter: '황건적 토벌',
     background: 'story-sortie',
     text: '의용군은 마을 어귀로 향했다. 첫 싸움은 곧 시작된다.'
diff --git a/src/game/scenes/BattleScene.ts b/src/game/scenes/BattleScene.ts
index 746cf0d..990c6ab 100644
--- a/src/game/scenes/BattleScene.ts
+++ b/src/game/scenes/BattleScene.ts
@@ -25,7 +25,6 @@ export class BattleScene extends Phaser.Scene {
 
   create() {
     const { width, height } = this.scale;
-    soundDirector.stopVoice();
     soundDirector.playMusic('battle-prep');
     this.add.rectangle(0, 0, width, height, 0x0f1418).setOrigin(0);
     this.drawMap();
diff --git a/src/game/scenes/StoryScene.ts b/src/game/scenes/StoryScene.ts
index 8756eae..784d616 100644
--- a/src/game/scenes/StoryScene.ts
+++ b/src/game/scenes/StoryScene.ts
@@ -116,7 +116,6 @@ export class StoryScene extends Phaser.Scene {
 
   private applyPage(page: StoryPage) {
     soundDirector.playMusic(page.bgm);
-    soundDirector.playVoice(page.voice, page.voiceRole ?? page.portrait ?? 'narrator');
     this.applyBackground(page.background);
     this.chapterText?.setText(page.chapter);
 
diff --git a/src/main.ts b/src/main.ts
index 1600ecf..e5b1809 100644
--- a/src/main.ts
+++ b/src/main.ts
@@ -1,5 +1,5 @@
 import Phaser from 'phaser';
-import { musicTracks, voiceTracks } from './game/audio/audioAssets';
+import { musicTracks } from './game/audio/audioAssets';
 import { soundDirector } from './game/audio/SoundDirector';
 import { BattleScene } from './game/scenes/BattleScene';
 import { BootScene } from './game/scenes/BootScene';
@@ -27,7 +27,6 @@ const config: Phaser.Types.Core.GameConfig = {
 };
 
 soundDirector.registerMusicTracks(musicTracks);
-soundDirector.registerVoiceTracks(voiceTracks);
 
 const game = new Phaser.Game(config);