Concept demo
Midnight Afterglow
Dream pop · vocal lift
Take your song further.
Upload a track, choose the handoff point, and let AI continue the music without starting from zero.
HEAR THE HANDOFF
Listen to the idea, then the continuation
Each paired demo makes the transition easy to compare: play the original direction first, then hear where the new section can take it.
Chorus → new verse
Concept demo
Glass Horizon
Cinematic · instrumental
Before extension
3:21After extension
3:05
Concept demo
Neon Crosswalk
Future R&B · second verse
Before extension
2:06After extension
2:54
Concept demo
Paper Sky
Acoustic folk · open ending
Before extension
1:52After extension
2:41
Concept demo
After Rain
Lo-fi house · bridge lift
Before extension
1:38After extension
2:22Concept demo
Slow Bloom
Ambient piano · film cue
Before extension
2:56After extension
3:44THREE STEPS
How AI song extension works
The AI listens to your audio up to the selected point, then generates a new musical continuation. It is a new performance inspired by the source—not a lossless edit.
- 01
Upload your work
Add a clean MP3, WAV, or M4A file you have the right to use.
- 02
Mark the handoff
Choose the exact moment where the original phrase should give way to the next idea.
- 03
Generate the next section
Keep the existing character or steer the continuation with a clear creative direction.
MADE FOR THE IN-BETWEEN
When an almost-finished song needs its next move
Use the extender to turn a strong fragment into a fuller musical thought, without rebuilding the part that already works.
Finish the ending
Give a track with an abrupt final phrase a longer, more resolved outro.
Build a longer cut
Turn a short hook or social-ready clip into a fuller version for your next edit.
Try the next chapter
Test a bridge, second verse, or energy shift before you commit to a complete arrangement.
Match music to video
Extend a cue so a short film, reel, or edit can land on a complete musical phrase.
Lengthen podcast intros
Give an intro or outro enough room to support your spoken opening without an obvious loop.
Keep game music evolving
Turn a short loop into a longer, changing bed that stays fresh throughout a level or scene.
WHY IT STANDS OUT
A continuation should feel intentional, not appended
Song Extender gives you a simple handoff and just enough creative control to keep momentum without losing the character of your source.
Built from your musical context
The selected source and handoff point give the model the context it needs for a more coherent next section.
Control when you want it
Start fast with the original sound, or open custom direction for style, lyrics, vocal preference, and influence controls.
Made for exploration
Try different handoff points and directions to compare fresh variations while your core idea stays intact.
Better inputs make better continuations
01
Choose a clean, audible section without long silence or clipping.
02
Place the handoff after a complete phrase when possible.
03
Say what changes next: section, energy, instruments, or vocal treatment.
04
Treat results as generative variations; refine the handoff or direction and try again.
WHY SONG ART
A better way to keep the music moving
Song Art gives you the right amount of control to create a continuation that feels intentional, useful, and still connected to your source.
01
Choose the right continuation point
A good handoff gives the next section room to arrive with purpose. Start from a completed musical thought, not the middle of one.
02
Built from your musical context
The selected source and handoff point give the model the context it needs for a more coherent next section.
03
Control when you want it
Start fast with the original sound, or open custom direction for style, lyrics, vocal preference, and influence controls.
04
Made for exploration
Try different handoff points and directions to compare fresh variations while your core idea stays intact.
Keep your ideas moving
Every extension uses 12 credits. Upgrade when you need more continuations, downloads, and the plan benefits that fit your release workflow.
View plans and creditsAI Song Extender FAQ
Upload a source track up to 8 minutes long. Choose a continuation point after the start and before the end of the audio.
How long can my upload be?+
Upload a source track up to 8 minutes long. Choose a continuation point after the start and before the end of the audio.
Will the continuation sound exactly the same?+
No. The model uses the source as creative context, so results can preserve its character while changing performance, structure, or instrumentation.
What is the difference between the two modes?+
Keep original sound uses your upload as the main direction. Custom direction exposes style, title, lyrics, and influence controls.
Can I upload someone else’s song?+
Only upload audio you own or have permission to process. Generating a continuation does not remove rights in the original recording.
How long are generated files retained?+
Kie documents that generated files are retained for 14 days. Save downloads you need and review the current provider terms before processing unreleased work.