Brandenberg Concerto #5
1 journaler for this copy...
Perhaps JSB got bored with plonking away with the harmony.
If you remember the film Slaughterhouse V from ages ago - that featured Glen Gould playing the solo on a big organ to accompany a load of Nazis stamping about, which was amazing. This was the younger, less nutsy Glen Gould so also worth a listen if its still available anywhere