Probably BACH on WOOD by Brain Slawson but there are many CDs out these days by marimbists performing (deforming) Bach. (I'd stick with the string performances) Could be anyone of them. Most marimbists have no other gigs so they just practice Bach pieces ALL the time & do a CD at home & "release" it on their own indy label. Good luck finding it. BTW- what piece is it?
