# Smart generate: a music bed per chapter, sound effects between them

Mark the episode into chapters once and Cast scores each part with its own bed — calm intro, driving topic, soft outro — and reserves the gap between chapters for a transition sound. Move or trim a chapter and the music re-times itself.

**Status:** Coming soon — not available yet.

**Plan:** Plus and higher subscribers get first access when it opens.

Today you generate one bed at the length of the episode, or several and place them by hand. Both work; neither knows that the interview got tense at minute twenty.

Smart generate uses your chapters as the score. Each gets a bed matched to its energy, transitions land exactly on chapter boundaries, and beds duck under voice and never bleed across a chapter you did not intend.

It is in private beta as the AI Mode tab in the editor.

## Related

- [How do I generate music for my episode?](https://mubert.com/tools/cast/docs/generate-music)
- [Can the music be built to fit my episode automatically?](https://mubert.com/tools/cast/docs/match-voice)
- [How do I add chapters with timestamps?](https://mubert.com/tools/cast/docs/chapters)
- [What is a stinger, a sting or a bumper?](https://mubert.com/tools/cast/docs/what-is-stinger)

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Source: https://mubert.com/tools/cast/docs/smart-generate · Cast docs
Last updated: 2026-09-14