Bob "notes" Norton,
You mentioned Passport Design's Master Tracks Pro above, I haven't heard a reference to that program for decades! I was an early user in the 80's. For me it was the entry into computer music that has continued until today and BIAB.
At one time they were located in Half Moon Bay, CA. and I would go directly to their headquarters to get my updates. The location was about 40 miles away and a brief detour on my way to S.F. to buy band arrangements for my school band.
I rememember in the early 80's I won first place at an Applefest convention by submitting a blues tune, on a floppy, created on Passport's Master Tracks or possibly Encore.
Thanks for triggering great memories.