ARMED is version control for Ableton Live. Every save that changes the music becomes a version, with a line saying what changed. Try an idea on a variation, then keep it, bin it, or merge it back.

The window: what changed since the last version you named, every version, and the variations of the song.
Ableton, FL Studio and Logic Pro are trademarks of their respective owners. ARMED is not affiliated with or endorsed by any of them.
One song, six saves that changed it. A quieter drop, a missing build, a drop that moved: ARMED keeps each of them, and you can go back to any one.

Hit ⌘S in Live. When the save changes the music, ARMED keeps it as a version and writes down what changed: reverb decay 1.2 s to 2.4 s, drop moved from bar 8 to bar 12.

Put the risky idea on a variation. The original stays where it was, and you can go back to any version in one click.

Bring two variations of a song back together. Where they clash, you pick. Nothing is written until you say so.