by bartekko » 03 Apr 2013 16:39
it's pretty much impossible to make stems without getting them from the original artist. if you want to just get a MIDI file from a loop you may have luck with some software (melodyne, ableton live 9) if the pitch is clear enough, but you probably will have to do it by ear.
[00:27:11] <@z0r8> you are voiced, now shut up