[hebelehubele]

You can also do this on your iPhone using the GarageBand app.

[tomasphan]

I didn't know that. How does that work?

[hebelehubele]

It's been a while since I did it, but you can find many videos on Youtube teaching how.

AFAIR, it was like this

  1. Download audio
  2. Import it in the app
  3. Copy the tune and append it once or twice, adjust the spacing to taste
  4. Export