Two requests come up again and again: 'my song is too short, can I extend it?' and 'I need music that loops under my video or stream'. Both are possible, but not always the way people expect, and some older advice about AI tools does not match how Autunes works today.
This guide is straight about what Autunes can and cannot do, then walks through the methods that work for each goal.
What Autunes can and cannot do
Here is the honest picture as of November 2026.
- Song length is decided when the song is made. Free and Pro songs run up to 3 minutes; Creator songs up to 5.
- There is no one-click extend button for a finished song, and Pro does not extend songs past 3 minutes.
- Long Forms, on Pro and Creator, builds devotional and long pieces of up to about 12 minutes from 70 to 140 lines, for 30 credits.
- A Jam take, where you sing or hum and Autunes adds the band, can be grown to about 3 minutes for 20 extra credits.
- Crop (keep a range) and Cut (remove a middle section) are 1-credit tools on Pro and Creator.
- Build on it adds parts such as drums, bass or strings around a finished track for 10 credits. It makes a fuller arrangement, not a longer song.
Make it longer from the start
Because length follows the lyrics, the reliable way to a longer song is to write a longer song. A rough guide is about five seconds per sung line, so a three-minute song holds around 20 to 32 lines. If your song came out at two minutes, it probably had two verses and two choruses; add a bridge and a final chorus and generate again.
Use the structure to add length the listener enjoys: an [Intro] with a melody before the voice comes in, an [Instrumental] break between sections, a [Bridge] that changes the mood, and an [Outro] that lets the song settle. These add time without making the vocal rush.
On Creator, songs can run up to 5 minutes. Write enough lyrics to fill that time, and listen through to the end to check the vocal holds all the way.
Very long pieces: Long Forms
Some texts are simply long. A full chalisa, a long aarti sequence or a qawwali can run past what a normal song holds. Long Forms, on Pro and Creator, takes the whole text, from 70 to 140 lines, and builds it as one file of up to about 12 minutes for a flat 30 credits. Each part is checked to make sure the right lines come in the right order.
If your text has fewer than 70 lines, a normal song sings it at a more natural pace, so use the Create tab instead. If it has more than 140 lines, split it into two long forms.
Growing a hummed or sung idea
Jam lets you sing or hum a take and have Autunes add the band, for 10 credits on every plan. Your take may be short, so Jam offers to extend the result to about three minutes for 20 extra credits. This is the one place in Autunes where a short piece grows into a longer one after you start.
How to make a seamless loop
Loops are for background: a stream, a game menu, a shop playlist, a long video. The aim is an end that flows back into the start without a bump.
- Make it instrumental. Switch on Instrumental Only; a vocal phrase cut at the join is the most obvious loop seam there is.
- Ask for a steady piece. 'Steady groove, no build-up, no big ending, consistent energy' gives you more loopable stretches than a song that rises and falls.
- Set the BPM. A known tempo lets you work out where bars start: at 120 BPM, one bar of four beats is two seconds, so 8 bars is 16 seconds.
- Crop on a bar boundary. On Pro and Creator, Crop keeps a time range for 1 credit. For loops, switch the fade off so the volume does not dip at the join.
- Test it. Loop the cropped file in any editor or video app and listen to the join several times. If you hear a click or a jump, move the start or end slightly.
Stems help with loops and longer edits
On Pro and Creator, stems split a song into six parts (vocals, drums, bass, guitar, piano and other) for 5 credits. That gives you options a single mixed file cannot: loop just the drums and bass under a voice-over, or build a longer track in an editor by repeating an instrumental section and bringing the vocal back only where you want it.
If you join two different Autunes songs in an editor to make a longer piece, keep them in the same key and tempo. Setting the same BPM and key in the advanced fields when you create both makes the join far smoother.
Common mistakes
Avoid these and most of the fiddly work goes away.
- Expecting a finished 2-minute song to be stretched; write more sections and generate again instead.
- Looping a section that contains a vocal phrase or a big drum fill.
- Leaving the fade on when cropping a loop.
- Cropping at a random second rather than at the start of a bar.
- Joining two songs with different tempos and hoping a crossfade hides it.