If you're only interested in the Leavitt, someone recently sent me the BiAB files for all those etudes. I haven't used them so I can't comment on how helpful they are, but I could forward them to you if you like. PM me.
Although I have to say, from a strictly practice standpoint, it is MUCH more educational and helpful to practice over backing tracks you make yourself. Use a metronome, record yourself with your webcam playing one part, then play the other part over that. You'll be getting double practice that way. |