MODE 01
Follow the source
Use the song's existing melody, rhythm, and feel as a starting point when you want to hear where the music could go without writing extra instructions.
AI Song Extender
The AI Song Extender creates a new musical section from the continuation point you choose, instead of repeating the source as a loop.
20 credits per extension · Eligible new accounts may receive 20 credits · Earn free credits through daily check-ins · Sign-in required
01 / UNDERSTAND
What the AI Song Extender Creates
An AI song extender creates new musical material from a point you choose in an uploaded song. Instead of repeating an existing section or slowing down the whole track, it generates a fresh continuation. Listen to how the new passage connects with the source, then choose a take that fits your arrangement.
The same source can lead to different ideas. Try another continuation point or adjust your creative guidance to explore a new direction, then compare the results by ear before keeping one.
How to Create a New Musical Section
Start at the upload step and submit the task after checking your settings.
- 1
01
Upload your source
Choose an MP3, WAV, or M4A file up to 50 MB and 8 minutes long. Listen to the source first so you know which section you want to extend.
- 2
02
Choose a continuation point
Choose a point on the source waveform at least 0.1 seconds after the start and 0.5 seconds before the end. A phrase ending or section change can be a useful starting place.
- 3
03
Add guidance
Let the source guide the next section, or use custom mode to add a title, style, lyrics, vocal direction, or instrumental preference. Start with the details that matter most to your idea.
- 4
04
Review and submit
Check the point and settings, then submit the generation. Preview the completed tracks in your browser and download the MP3 you want to keep.
02 / TIMELINE
Choose a Practical Continuation Point
A continuation point is a location you choose on the source audio waveform. For a starting experiment, look near a musical boundary that makes sense for your idea, then confirm that the point is at least 0.1 seconds from the start and 0.5 seconds before the end. Use the waveform together with careful listening: a location that looks interesting may not support the musical direction you want, so compare eligible positions before submitting the task.
03 / DIRECTION
Guide the Next Musical Section
Use the source as your guide, or describe a more specific direction for the next section.
MODE 02
Add custom guidance
Describe a style, add lyrics, choose a vocal direction, or request instrumental output when you have a clearer idea. Influence controls let you explore how much each part of your guidance shapes the take.
04 / ACCESS
Credits, Free Access, and Task Limits
Sign in to upload and generate. Each generation uses 20 credits. Eligible new accounts may receive 20 promotional credits, and daily check-ins can add free credits to your balance; eligibility depends on the account.
If a generation fails after credits are charged, those credits are returned. You can run one extension at a time, so wait for the current task to finish before starting another.
05 / USE CASES
Ideas for a New Section
Use a continuation to develop a longer arrangement from a promising musical idea, sketch a bridge for a demo, or hear how a chorus might lead into a new section. Compare the new passage with the source to decide whether its energy and timing work for your project.
Completed continuation tracks can be previewed in the browser and downloaded as MP3 files when you are ready to review them in another part of your workflow.
Completed tasks remain in your generation history, so you can revisit earlier experiments and compare the directions you explored.
06 / NEXT STEPS
Continue Your Audio Workflow
Create a new song from a prompt instead of extending uploaded audio with AI Music Generator.
Apply speed and reverb treatment after generation with Slowed and Reverb.
Edit MP3 title, artist, album, and cover metadata after download with MP3 Tag Editor.
To make an instrumental version of an extended song, try Instrumental Maker.
FAQ
AI Song Extender FAQ
Review common questions about uploads, continuation points, guidance, completed tracks, credits, and failed generations.
Which audio formats can I upload?
Upload MP3, WAV, or M4A. The file limit is 50 MB and the duration limit is 8 minutes.
Where can I set the continuation point?
Choose it on the source waveform; it must be at least 0.1 seconds from the start and 0.5 seconds before the end.
What does the AI song extender do?
It creates a new musical section from the point you select, rather than looping an existing passage.
Can I guide the continuation?
Yes. Follow the source or add a style, lyrics, vocal direction, and instrumental preference in custom mode. Listen to the result to see how the guidance turned out.
How do I receive a completed track?
Completed continuation tracks can be previewed in the browser and downloaded as MP3 files.
How many credits does a generation use, and what if it fails?
Each generation uses 20 credits. If a charged generation fails, those credits are returned.
Can I use free credits?
Eligible new accounts may receive promotional credits, and daily check-ins can add credits to your balance. Check your available balance before generating.