{
  "prompt": "Genre: J-Rock / Anisong / Symphonic Rock; BPM: 135; Key: E minor; Rhythm: Driving rock beat with a strong backbeat, busy 16th-note kick patterns, and fast, tight hi-hats.; Instruments: Punchy acoustic drums; tight electric bass; layered, high-gain distorted guitars; bright acoustic piano for melody; epic orchestral strings for cinematic scope.; Vocals: Female. Powerful, clear, and emotive lead vocal with a strong chest/mix voice and soaring high notes. Passionate delivery. Harmonized backing vocals in chorus.; Mood: The final sprint in a race, muscles screaming, but a sudden surge of adrenaline pushes you past the finish line.; Production: High-fidelity modern rock. Dense, wide mix with powerful, upfront vocals. Polished and radio-ready.; Language: Japanese; Highlight: The explosive downbeat of the first chorus, where the full band crashes in and the vocal soars, releasing all pre-chorus tension.",
  "lyrics": "[intro]\n(Chords: Em - D - C - G/B - Am7 - B7)\n(Vocal-Perf: Soft, breathy, almost spoken, transitioning to a full chest voice)\n(Inst: Delicate piano arpeggios, atmospheric strings swelling underneath)\n(Mix: Starts intimate and narrow, explodes into a wide stereo image with the full band entry)\n強くなれる理由を知った\n僕を連れて　進め\n\n[verse]\n(Chords: Em - C - G - D)\n(Vocal-Perf: Assertive and rhythmic chest voice, mezzo-forte dynamic)\n(Inst: Driving distorted guitars, tight bass locked with kick drum, punchy snare on 2 and 4)\n(Melody-Rhythm: Syncopated and conversational, mirroring the rhythmic pulse of the band)\n泥だらけの走馬灯に酔う\n強張る心　震える手は\n掴みたいものがある\nそれだけさ\n\n[pre-chorus]\n(Chords: Am7 - G/B - C - Dsus4 - D)\n(Vocal-Perf: Intensity builds, pitch rises, notes become more sustained and emotional)\n(Inst: Strings become prominent with a tense ostinato, drums shift to a half-time feel to build tension)\n(Structure: Clear dynamic build, a palpable climb towards the chorus)\n夜の匂いに (I'll spend all thirty nights)\n空睨んでも (Staring into the sky)\n変わっていけるのは　自分自身だけ\nそれだけさ\n\n[chorus]\n(Chords: C - D - Bm7 - Em - C - D - G)\n(Vocal-Perf: Full power, soaring in a high register with controlled, wide vibrato)\n(Inst: Layered distorted guitars create a wall of sound, crashing cymbals, epic strings play counter-melodies)\n(Mix: Maximum width and energy, vocals cut through the dense arrangement with clarity and power)\n強くなれる理由を知った\n僕を連れて　進め\nどうしたって消せない夢も　止まれない今も\n誰かのために強くなれるなら\nありがとう　悲しみよ\n世界に打ちのめされて負ける意味を知った\n紅蓮の華よ　咲き誇れ\n運命を照らして\n\n[bridge]\n(Chords: Cmaj7 - D - Bm7 - Em - Am7 - B7sus4 - B7)\n(Vocal-Perf: Starts softer and more introspective, then builds back to full power for the final line)\n(Inst: Texture thins to just piano and clean guitar arpeggios, then drums and bass re-enter with a powerful build)\n(Structure: Provides emotional and dynamic contrast, a moment of reflection before the final climax)\n人知れず　儚い散りゆく結末\n無情に破れた 悲鳴の風吹く\n誰かの笑う影　誰かの鳴き声\n誰もが幸せを願ってる\n\n[chorus]\n(Chords: C - D - Bm7 - Em - C - D - G)\n(Vocal-Perf: Maximum emotional intensity, powerful ad-libs and harmonies added)\n(Inst: All instruments at full force, lead guitar adds melodic fills between vocal phrases)\n(Mix: The loudest and widest point of the song, a massive, epic conclusion)\nどうしたって消せない夢も　止まれない今も\n誰かのために強くなれるなら\nありがとう　悲しみよ\n世界に打ちのめされて負ける意味を知った\n紅蓮の華よ咲き誇れ！\n運命を照らして\n\n[outro]\n(Chords: Em - D - C - G)\n(Inst: Driving guitar riff over powerful drum hits, ending on a final, sharp chord with cymbal crash)\n(Structure: High energy instrumental finish that ends abruptly)",
  "song_id": "02_紅蓮華_20260420",
  "_meta": {
    "provider": "google",
    "model": "gemini-2.5-pro",
    "usage": {
      "prompt_tokens": 11166,
      "completion_tokens": 1139,
      "total_tokens": 15034
    },
    "generated_at": "2026-04-20T22:51:33.639442+08:00"
  }
}