Adding Background Music to an AI Short Drama

Quick answer: A drama clip on SceneMixer is generated with its voices and ambient sound, but no score is asked for; once in a while a clip comes with a light bed of music of its own. There is no music track or mixer in the editor. To score an episode, composite it, download the file, and lay one licensed track under the whole episode in a video editor or in the platform you post to, keeping it below the voices. Music that belongs to the scene — a radio, a street musician, a piano next door — can be written into the shot’s Ambient line. Ads are different: their music follows the tone you picked.

Still from “Rust City Knockout”, an AI short drama generated end-to-end by SceneMixer (6 characters, 1 episode) — Sample: “Rust City Knockout” — Painterly Anime, 1 episode, produced end-to-end by SceneMixer from the script · watch the episodes

Open a shot and add "Ambient: a radio playing an old love song in the kitchen", then generate that segment and listen.

What a clip already has

Voices for every line, lips moving with them, and the sound of the place from the shot’s Ambient line. Dramas are not asked for a score. Each segment is generated on its own, so music made per segment would change at every cut; one track over the whole episode avoids that. When a clip does come with a little music, it is that clip’s own and may not match the next one. Dialogue and sound in one generation.

Music inside the scene

If the music is something the characters could hear, write it as sound in the shot: Ambient: a busker’s violin across the square, Ambient: the café radio, quiet. It is generated with the clip, like rain or traffic. Keep it short and specific, and keep it under the dialogue by saying so: quiet, far off.

A score over the whole episode

Composite the episode once every segment has a clip, and download it.
Open it in any video editor, or in the editing tools of the platform where you post.
Lay one track under the whole episode, so the music runs across the cuts.
Keep the music clearly below the voices, and lower it further under lines of dialogue.
Use music you have the rights to, or the platform’s licensed library.

Composite and share an episode.

An ad project describes its music from the ad’s tone, the same description for every segment, so the ad is scored from the start. Where the music in an ad comes from.

You want	Where it comes from	How
Music the characters hear	The clip	Write it in the shot's Ambient line
A score across the episode	Your own edit	Download the composite, add one track under it
Music in an ad	The ad's tone	Chosen when the ad is made

FAQ

Can SceneMixer add a soundtrack to my episode?

Not for dramas. Download the composite and add music in a video editor or the platform you post to.

A clip has music I did not ask for. Can I remove it?

The sound is one track, so music cannot be lifted out on its own. Regenerate the segment, or cover it with your own score.

Why not let each segment have its own score?

Each segment is generated separately, so separate scores would change at every cut. One track over the episode stays continuous.

What volume should the music be?

Well under the voices, and lower still under dialogue. If you have to strain to hear a line, the music is too loud.

Score the episode once

Composite, download, one licensed track under the whole thing.

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Updated October 2, 2026