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music

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Shared ChatCut entry point for newly generated music, soundtrack, theme music, 配乐, background music, an intro theme, a music bed, BGM, or vocal songs. Infer backing music from the brief; ask only about material ambiguity. Use `submit_music` for either branch, with `generationType` selecting instrumental or song mode.

grok/skills/music/SKILL.md

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# Music

Use `submit_music` to create a new instrumental background-music or vocal-song audio asset. For an explicit sung song, lyrics-to-song request, or vocal MV song, read [`references/song.md`](references/song.md) for the lyric workflow, then call `submit_music` with `generationType:"song"`. Infer instrumental backing music from a supporting role, the brief and the surrounding edit; ask about vocals only when the unresolved choice materially changes the user's goal.

The tool submits one generation job and returns a `jobId`. The generated audio asset is available after `track_progress` reports completion.

## Capability Boundary

`submit_music` creates a new original music asset. ChatCut does not expose Mureka's editing, extension, remix or stem-separation features, so it cannot change existing audio. The output length cannot be set; trim or loop it on the timeline. Sung songs support Chinese, English, Japanese, Korean, Portuguese, Spanish, German, French, Italian and Russian lyrics.

Mureka also cannot guarantee exact beat, drop, lyric, or timestamp alignment. Generate the music asset first, then use timeline tools for placement, trimming, looping, fades, and ducking. If the user requires precise beat-level sync, explain that this must be handled as a timeline/audio edit rather than guaranteed by the generation model.

When a generation tool returns `FEATURE_NOT_INCLUDED` for a `generation.*` feature, use its payer and access details. If the project owner needs Pro, explain that the owner pays and must upgrade; the member's own Pro does not unlock the project. Do not give the member a personal upgrade link or send them to their own billing menu. They can find the owner in the project's existing members view when available. Otherwise share the returned upgrade link, or ChatCut’s avatar menu → Upgrade. Existing credits are preserved and generation still consumes credits after upgrading. This rejection does not charge for generation; existing agent conversation fees are separate, so do not claim the whole conversation was free. Preserve the exact original tool input and project, then stop. Do not automatically search for or substitute stock media; offer alternatives only if the user explicitly asks.
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