Mureka Extend Song

---
name: mureka-extend-song
description: "Mureka | Extend Song. Extend an existing song with new lyrics from a specific timestamp. Triggers: extend, song, mureka, music, continue, lengthen"
allowed-tools: Bash(curl *), WebFetch
---

# Mureka | Extend Song

Extend an existing song by providing new lyrics and a starting point. Works with songs generated by Mureka or uploaded audio files.

## Quick Start

> Requires an each::labs API key. Get one at [eachlabs.ai](https://eachlabs.ai).

```bash
curl -X POST https://api.eachlabs.ai/v1/prediction \
  -H "Content-Type: application/json" \
  -H "X-API-Key: $EACHLABS_API_KEY" \
  -d '{
    "model": "mureka-extend-song",
    "version": "0.0.1",
    "input": {
      "song_id": "abc123-song-id",
      "lyrics": "And the music plays on through the night\nUnderneath the stars so bright",
      "extend_at": 30000
    }
  }'
```

## Parameters

| Parameter | Type | Default | Description |
|-----------|------|---------|-------------|
| extend_at | integer | false | Extending start time in milliseconds. If greater than song duration, defaults to end. |
| lyrics | string | false | The lyrics to extend with. |
| song_id | string | false | Song ID for extending (from song/generate API). Mutually exclusive with upload_audio_id. |
| upload_audio_id | string | false | Upload ID of the song to extend (from files/upload API). Mutually exclusive with song_id. |

## Examples

**Extend a generated song:**
```bash
curl -X POST https://api.eachlabs.ai/v1/prediction \
  -H "Content-Type: application/json" \
  -H "X-API-Key: $EACHLABS_API_KEY" \
  -d '{
    "model": "mureka-extend-song",
    "version": "0.0.1",
    "input": {
      "song_id": "generated-song-id-123",
      "lyrics": "Verse 3:\nWalking down memory lane\nEvery moment, joy and pain\nBut we keep moving forward still\nClimbing every hill",
      "extend_at": 60000
    }
  }'
```

**Extend an uploaded song:**
```bash
curl -X POST https://api.eachlabs.ai/v1/prediction \
  -H "Content-Type: application/json" \
  -H "X-API-Key: $EACHLABS_API_KEY" \
  -d '{
    "model": "mureka-extend-song",
    "version": "0.0.1",
    "input": {
      "upload_audio_id": "uploaded-file-id-456",
      "lyrics": "Bridge:\nHold on tight, do not let go\nThrough the highs and through the lows"
    }
  }'
```

## Related Models

- [mureka-generate-lyrics](../mureka-generate-lyrics/) - Generate song lyrics
- [mureka-extend-lyrics](../mureka-extend-lyrics/) - Extend existing lyrics
- [mureka-stem-song](../mureka-stem-song/) - Separate song into stems

## Documentation

- [each::labs Docs](https://docs.eachlabs.ai)
- [API Reference](https://docs.eachlabs.ai/api/overview)