8-way beat juggling/ variation jammer.
I use techniques similar to this a lot for drums when jamming with my friend. It allows me to make and perform the drum parts for entire songs using a single pattern on the OT and MD. I use my MD for this, but you can use anything with 4 outputs that can spit out 4 different versions of the same beat at the same time, or 4 turntables etc. You can also use this on non-drum sounds for melodic variation or chord changes :
1) All on the same pattern - I make a beat using the MD tracks 1-4. I then mute tracks 1-4 , and copy the sounds from track 1-4 to tracks 5-8. Then I make a new beat on the same pattern using MD track 5-8. I then mute 5-8 and copy sounds to tracks 9-12 and so on until I have 4 different beats on the same pattern: beat 1 t1-4, beat 2 t5-8, beat 3 t9-12, beat 4 t13-16. Then un mute all tracks and route the outputs so that each beat is sent to a separate output: t1-4 output A, t5-8 output B, t9-12 output C, t13-16 output D.
2) Connect the 4 outputs to the OTs 4 inputs. Assign each input to a track on the OT.
3) Make 4 scenes. Each scene should only play 1 track ( 1 beat/1 input) ie scene1 plays beat 1, scene 2 plays beat 2 etc. To do this use the Vol parameter to mute all other beats per scene. You can now crossfade between beats by assigning these scenes to the crossfader.
4) Use the remaining 4 tracks as beat juggling tracks ( I tend to do this across, so t5 juggles t1, t6 juggles t2 etc.). To do this set up recorder triggers to record the track with the beat you want to juggle. Then place playback trigs on the juggle-track to make offset versions of the same beat.
5) Make 4 more scenes like step 3 but for the juggle tracks, one scene per juggle beat. You should now have 8 scenes each only playing one beat at a time: s1-4 beats 1-4, s5-8 juggles 1-4. You can now crossfade between all 8 or play the scenes as others have described.
6) Use remain scenes/parts for effects variations and different juggles.
That's it, and now you've got mountains of drum variations all set up on the crossfader/scenes. If you get confused by the beat juggling part should check out some tutorials on beat juggling as I don't explain it in detail above, or just leave it out and use your spare tracks for effects or samples. I tend to use all 8 tracks for drums only when someone else or other hardware is taking care the rest (samples, chords, melody etc.)