yoda.
re drums.
couldnt you also do this.
lets say you wanted to build a lib of one shot drum hits.
viz..do lots of generations of stereo drum traks.
then convert to mono traks. snip out the drum hits you like ,
put em in your special drum lib , condition em further
n then drop the hits you like
into various points in the song ??
for example lets say you like a certain cym sound.
cut it out n put it in the lib. then just slot it in on the time line
where you want it in the song.
in summary , you could have RB generate a drum trak n then add
samples of drums youve made or got from somewhere
to add further variety etc etc.
just sayin you dont HAVE TO use stereo drum traks.
for example , lets say you want that 50's drum sound.
turn the trak to mono, or even slam it thru a tape machine
n record back in before you add other traks.
for even more variety, and its a trik ive done in powertraks
in the past. is to fill a trak with a midi drum pattern
or a pattern ive built, then move the midi pattern up or down
one or more semitones et voila with an external midi multi timbral unit..
get a bunch of different sounds or say use a plug in.
its a neat trik to try cos suddenly a boring midi pattern might get
interesting with a likle editing.
its all experimentation eh ??
in summary..loads of options i would suggest.
real drums plus your own custom drum hits plus midi drum traks
driving a plug in and/or external midi unit that has lots of drum
sounds in.
another way to get one shot drum sounds is to rent a few midi modules
with loads of drum sounds n record as one shots n add to the one shot lib.
some people also augment with drum sounds from around the house.
the rubbermaid lid, tapping a mic in ones pocket can yield sorta a kik
drum..lol. sample manipulation is interesting n fun mate.
for a nutty dragon song i was doing once i recorded a vacuam cleaner for example.
for the baby dragon sound (who the heck knows what one might sound like..lol.)
i recorded my siamese cat n then changed the key of the audio sample.
made it higher. for example , lets say a certain real drum cymbal is sorta there.
nothing to stop you getting a one shot of the audio n changeing it.
as jazz said..for all the above experimentation...RB is the product to use.
mebe rough out song idea in biab, then add all the song details n iceings in RB.
all the best.

retired puter engr....powertracks on amd......NICE !
"what is the black art of audio engineering ?"
my silly songs...motagator.com/bmanning
see my tips in the tips section.