THE MUSIC DECK
THE MUSIC DECK
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Game

Battles — Audio

Battle audio specification for production and runtime only. This section is internal tooling for the game designer, not player-facing UX.

1) Battle audio strategy

  • All battle songs are AI-generated in production.
  • All battle songs are streamed at runtime.
  • Each generated asset is 3:00 and must avoid plagiarism and celebrity voice imitation.
  • Non-battle music (menus, collection, UI, boosters) is out of scope in this section.

2) Catalog scope and counts

  • Genre-intensity nodes: Mainstream (pop-only) = 1, plus 7 genres x 4 intensity = 28.
  • Countries target: 50.
  • Total elements: 79.
  • Total 2-element combinations: C(79,2) = 3081.
  • Total generated duration: 3081 x 3 min = 9243 min (~154.1 hours).

3) Battle playback logic

  • Active turn decides ownership: your turn plays your active context, opponent turn plays theirs.
  • No active card for the current player means silence.
  • One active card plays its single track (country or genre-intensity).
  • Two active cards play the dedicated 2-element combination track.
  • Three or more active cards use the combination of the two most recently activated cards.
  • First start from silence begins at 0:00 with no fade-in.
  • Any transition with an already playing track uses overlap crossfade: fade-out/fade-in both at 3s, with the incoming track starting from a random offset between 10s and 120s.
  • On track ending, self-crossfade at 3s and restart the same track at 0:00.
  • If crossfade A -> B is in progress and C arrives, cancel B and redirect immediately to A -> C (last-write-wins).

4) Generated AI prompt

Choose exactly two elements, then copy a deterministic battle-song prompt for the generation pipeline.
Wheel 1 (genre-intensity)
Mainstream
Mainstream · POP
Selected sound prompt
[Mainstream · POP]
Genre + sub-genre: Mainstream / POP (to be authored).
Tempo + groove: to be authored.
Instruments + textures: to be authored.
Mood: to be authored.
Structure + dynamics: to be authored.
Non-copyright references: to be authored.
Wheel 2 (genre-intensity)
Mainstream
Rock · SOFT
Selected sound prompt
[Rock · SOFT]
Genre + sub-genre: Rock / SOFT (to be authored).
Tempo + groove: to be authored.
Instruments + textures: to be authored.
Mood: to be authored.
Structure + dynamics: to be authored.
Non-copyright references: to be authored.
Countries grid (all available)
Apply country to:
Selection summary
Selection 1: Mainstream · POP
Selection 2: Rock · SOFT
Normalised pair key: genre-mainstream--intensity-POP__genre-rock--intensity-SOFT
Prompt output
Generate one original battle music track.
Duration: exactly 3:00.
Pair key (deterministic lookup): genre-mainstream--intensity-POP__genre-rock--intensity-SOFT.
Element prompts to combine:
[Mainstream · POP]
Genre + sub-genre: Mainstream / POP (to be authored).
Tempo + groove: to be authored.
Instruments + textures: to be authored.
Mood: to be authored.
Structure + dynamics: to be authored.
Non-copyright references: to be authored.
[Rock · SOFT]
Genre + sub-genre: Rock / SOFT (to be authored).
Tempo + groove: to be authored.
Instruments + textures: to be authored.
Mood: to be authored.
Structure + dynamics: to be authored.
Non-copyright references: to be authored.
Blend target summary: Mainstream · POP + Rock · SOFT.
Intensity profile emphasis: bright, accessible, hook-forward + warm, restrained, low-friction.
Intensity profile: 0:00-0:40 controlled setup, 0:40-1:50 escalation, 1:50-2:30 peak pressure, 2:30-3:00 controlled release with loop-friendly ending.
Energy arc constraints: no dead section longer than 8 seconds, clear pulse continuity, maintain battle readability under SFX.
Compliance: no plagiarism, no direct melodic quotations, no imitation of celebrity voices, no lyrics.
Output: high-quality stereo master suitable for streaming battle playback.