Warping your tracks in Ableton gives you the flexibility to change tempo and key on the fly. For instance, we normally play the song “This Glorious Grace” in the key of G whenever Jaleesa is leading that song, but when Aaron leads that song, we play the song in the key of C. Since all of my tracks are already warped I can change the key of the tracks for that song with just a few clicks of the mouse.
Another example of why I warp my tracks is to allow for quick tempo changes. Some days you might want to lead a song a little slower than the normal BPM. Since my tracks are warped, I change the tempo in the master scene, and all of my tracks automatically follow.