Originally Posted by John Lawrence Schick
If you must use a drum program, cut it at the ritard.


That's how it's done, and then when the drums cut out, you play the ending freestyle on whatever instrument you have the best feel for, and then use that performance as the guide for the other tracks to follow. You play the final missing drum beats manually to match the music tracks.

Tempo changes inside the song are pretty tough to do with a drum program.