Ok. I have a simple tune (Miles Davis Tune Up) using JAZCOOL.STY

Bass only - The bass pattern is there but on top is a bunch of other almost random sounds: a harp, a rattle sound, and others. Their pitch is correct but they shouldn't be there.

Piano only - the chords are there but on top is a high tremelo sound that comes and goes.

Drums only - the count in to the tune has the clicks but also a rattle sound and what sound like low tom-toms! The tune itself has wrong drums. It hasn't the simple hi-hat and cymbal rhythm it should - lots of snare drum and others.

Guitar only - As with the piano the guitar chords are there but with other random guitarish sounds.

Weird !!!!!!!