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AI Song Extender: Make Any Song Longer

Choose a song, set the exact second where the new part should start, and describe what comes next. Grok Music writes the continuation in the same key, tempo, and sound, and saves every take to your Library.

Model
Source song
0/1000
0/5000
Cost—

An AI music extender that continues your track, not a loop

Looping the last eight bars makes a track longer but not better. The extender generates new musical material from a point you choose, guided by your style notes and, if you want vocals, your own lyrics.

Pick the exact starting point

Drag the start marker to any second of the source. Extend from the final chorus for a longer ending, or from the middle of a verse to take the song somewhere new. Everything after that point is replaced by the new section.

Your Library or your own upload

Continue any song you generated with Grok Music, or upload an MP3, WAV, M4A, FLAC, or OGG file on a paid plan or credit pack. Uploads can be up to 4 minutes on Lite and the Small Pack, and up to 8 minutes on Pro, Ultra, and the larger packs.

Lyrics or instrumental

Write the lines you want sung in the new section, or switch Instrumental on for an outro, a bridge, or a longer bed under a video. Optional voice and exclude-style controls keep the continuation consistent with the original.

Nothing is overwritten

The extension is saved as a new result next to the original. You can keep extending the best take, compare versions side by side, or send one to the cover and vocal remover tools.

When to use an AI song extender

Fit a track to a video edit

A 1:45 song rarely matches a 2:30 edit. Extend from a natural phrase ending so the music runs to the last frame instead of fading early or looping audibly.

Write the next verse or a bridge

Already happy with the first verse and chorus? Add lyrics for verse two or a bridge and let the extender continue the arrangement under your words.

Build a longer ending

Start just before the last chorus and describe a bigger finish, a key change, or a slow piano outro. Try a few versions and keep the one that lands.

Score games, podcasts, and streams

Turn a short theme into a longer cue for a level, an intro segment, or a stream break without starting a new song from scratch.

How to extend a song with AI

Extending takes four steps and usually finishes in one to three minutes.

Start now
  1. 1

    Choose your song

    Open "My songs" to pick a track from your Library, or switch to "Upload audio" to use your own file. Songs you made with Suno V6, V6 Mini, or V6 Wild are extended with the same model automatically.

  2. 2

    Set the start point

    Move the slider to where the new section should begin. By default it sits one second before the end, which works well for longer endings.

  3. 3

    Describe what comes next

    Write the style and arrangement for the new part, add a title, and either paste lyrics for the new section or switch Instrumental on.

  4. 4

    Generate and compare

    Check the credit cost shown next to the button, generate, and listen to each returned take. Download your favourite or keep extending it.

Tips for smoother extensions

  • Start at the end of a phrase or bar, not in the middle of a held note or a drum fill.
  • Repeat the key instruments and mood from the original in your style notes, then add one change you want to hear.
  • Label lyrics with [Verse], [Bridge], or [Chorus] so the arrangement follows the structure you expect.
  • If a take drifts, extend again from a slightly earlier point instead of rewriting the whole prompt.

Extension prompts to try

Bigger final chorus
Same band and tempo, final chorus with stacked harmonies and a lift in energy, drums open up, ends on a held chord.
Piano outro
Strip back to solo piano and soft strings, slower and quieter, a reflective ending that resolves to the tonic.
New bridge
Half-time bridge with filtered drums and a new chord progression, builds for eight bars back into the chorus.
Instrumental break
Guitar solo over the verse chords, then a drum fill into the last chorus. Instrumental only.

AI song extender FAQ

How does the AI music extender work?

It listens to the source up to the start point you choose, then generates a new continuation that follows your style notes and lyrics. The result is a new song file that contains the original up to that point plus the extension.

Can I upload a song to extend it?

Yes, on paid plans and credit packs. Upload an MP3, WAV, M4A, FLAC, or OGG file up to 4 minutes (Lite and Small Pack) or 8 minutes (Pro, Ultra, Large and Mega packs). Songs from your Grok Music Library can be extended on any account.

Is the AI song extender free to try?

New accounts receive free welcome credits that work in every tool. The exact cost of an extension is shown next to the Extend button before you submit, and credits for failed tasks are returned automatically.

Can I add lyrics or keep it instrumental?

Both. Paste lyrics for the new section to hear them sung, or switch Instrumental on for an outro, interlude, or background bed.

Will extending replace my original song?

No. The original stays in your Library and the extension is saved as a new result, so you can compare them or try again from another point.

Which models can I use?

Suno V6, V6 Mini, and V6 Wild. Library songs are matched to the model they were made with; uploads default to V6 and you can switch before generating.

Can I download or publish the result?

MP3 downloads are included with paid plans and credit packs, WAV export with Pro, Ultra, and the Large or Mega packs. Commercial use is covered on Pro, Ultra, and the Large or Mega packs for music you have the rights to.

How long are my files kept?

Every task stays listed in your Library, but the audio files themselves are hosted by our generation partner for about 14 days. Download the takes you want to keep: MP3 is included with paid plans and credit packs, and WAV export with Pro, Ultra, and the Large or Mega packs.

What audio am I allowed to use?

Only audio you created, own, or have permission to transform. When you upload a file you confirm that you hold those rights. AI processing does not clear third-party rights, and Grok Music commercial terms only cover what you are entitled to use. Rights holders can contact [email protected] with evidence of a dispute.

Give your song the ending it deserves

Pick a track, set the start point, and hear a few ways it could continue.