Mureka AI V8 Extend Song API

Mureka AI V8 Extend Song

Mureka AI V8 Extend Song extends an existing song or audio track by generating a new continuation segment from the head or tail, guided by provided lyrics. It is suitable for song continuation, outro generation, intro extension, and other music editing workflows where you want to grow an existing track instead of generating a new one from scratch.

Why Choose This?

• Song continuation workflow Extend an existing audio track with newly generated music and vocals.

• Head or tail extension Choose whether to extend from the beginning or the end of the source audio.

• Lyrics-guided extension Provide lyrics for the new segment so the continuation matches your intended content.

• Simple extension control Use extend_at to define where the extension should begin.

• Flexible output formats Export the extended result as mp3, wav, or flac.

• Production-ready API Suitable for music editing, song completion, structure expansion, and content production workflows.

Parameters

Parameter	Required	Description
audio	Yes	Source audio URL to extend. It will be uploaded to Mureka as audio.
lyrics	Yes	Lyrics for the extension segment.
extend_at	Yes	Extension position in milliseconds.
extend_type	No	Whether to extend from the tail or head of the source audio. Default: tail.
output_format	No	Output audio format after re-uploading to WaveSpeed CDN. Supported values: mp3, wav, flac. Default: mp3.

How to Use

1. Upload your source audio — provide the existing song or audio track you want to extend.
2. Write the extension lyrics — enter the lyrics for the new segment.
3. Set extend_at — define the position in the source audio where the extension should begin.
4. Choose extension type — use tail to extend from the end or head to extend from the beginning.
5. Choose output format — select mp3, wav, or flac.
6. Submit — run the model and download the extended song.

Example Use Case

Extend a demo track from the last chorus by adding a new lyrical outro section with matching musical style and vocal continuation.

Best Use Cases

• Song continuation — Add a new ending or next section to an existing track.
• Intro or outro generation — Extend the front or back of a song with new material.
• Demo finishing — Turn partial song ideas into more complete structures.
• Music editing workflows — Expand tracks without rebuilding them from scratch.
• Creative experimentation — Try alternate continuations from a chosen point in the song.

Pro Tips

• Use lyrics that match the tone and structure of the existing audio for smoother continuation.
• Choose tail when you want to add a new ending or next section.
• Choose head when you want to generate an intro or earlier lead-in material.
• Use wav or flac when you want higher-quality outputs for further production work.
• Make sure the source audio is clear and complete enough around the extension point for better results.

Notes

• audio, lyrics, and extend_at are required.
• extend_at specifies the position in the source audio where the extension begins.
• extend_at is measured in milliseconds.
• extend_type defaults to tail.
• output_format defaults to mp3.

Related Models

• Mureka AI V8 Generate Song — Create full songs from lyrics with optional style and reference guidance.
• Mureka AI V8 Generate BGM — Generate background music tracks from prompts.
• Mureka AI Stem Song — Process songs into stem-based outputs for remixing, editing, and production workflows.