# Carry Any Track Past Its End, in Its Own Sound

> Extend a music track, ambience or sound effect past its end with AI. Choose how much to add, describe what comes next, keep the clip's own sound. Free to start on Layer.

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The cue is right and it is too short. The trailer cut grew, the menu loop needs more time before it repeats, the ambience runs out before the level does. Regenerating at a longer length means losing the version the team approved, and looping it by hand leaves a seam a player will hear.

Extend Audio on Layer carries a clip past its end. Upload the track, choose how much to add, optionally describe what should happen next, and Layer continues it in the sound it already has.

## Key Capabilities

**Continue in the Clip's Own Sound**
The extension is generated from the audio you upload, so instruments, tempo, texture and mix carry through into the new section.

**Choose How Much to Add**
Set the number of seconds to add for each run, and extend the result again when the scene needs more.

**Steer What Comes Next**
Describe the direction, a build, a resolve, a quieter passage, or leave the prompt light and let the track carry on as it was going.

**Music and Sound Effects**
Choose a model built for music or one built for sound effects and ambience, so a score, a background bed and an effect tail can all be extended.

**Part of the Audio Toolkit**
Extend sits beside Audio Inpaint, music and sound effect generation, so a cue can be lengthened, fixed and finished in one place.

## How It Works

**Upload the clip**
Bring in the cue, ambience or effect you want to lengthen, generated on Layer or recorded elsewhere.

**Set the length and direction**
Choose how many seconds to add and describe what should come next, if anything.

**Review and export**
Listen through the join, extend again if needed, and export the longer clip or place it on the timeline.

## Built for Game Production

**Trailers and UA Spots**
When the edit grows, extend the approved score to fit rather than commissioning a new cut of the music.

**Menus and Loops**
Give a menu or hub theme more length before it repeats, so players hear the loop less often.

**Ambience Beds**
Lengthen a room tone or environment bed to cover a whole level or scene without an audible splice.

**Effect Tails**
Let an explosion, spell or impact ring out longer when the moment on screen needs more weight.

## Frequently Asked Questions

### What does Extend Audio do?

It continues a clip past its end. Layer listens to the audio you upload and generates more of it, in the same sound, so a short cue, ambience or effect becomes a longer one without a hard edit.

### How do I control how much gets added?

Set the number of seconds to add before you run it. Each model has its own maximum, shown when you choose it, and you can extend the result again to go further.

### Can I steer what comes next?

Yes. Describe what should happen in the new section, building to a finish, staying calm, adding an instrument, or leave it to carry on as it was going.

### Does it work on music and sound effects?

Yes. Extend Audio runs on models built for music and on models built for sound effects and ambience, so a score, a room tone and an effect tail can all be lengthened with the same tool.

### How is this different from generating a longer clip?

A new generation starts from nothing. Extending starts from the clip you already approved, so the continuation keeps its instruments, tempo and character.

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Make the cue you love long enough for the scene. Extend your first track free on Layer.

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[View original](https://layer.ai/features/extend-audio) | [All Features](https://layer.ai/features)