This is the version I started on.

Had a DOS computer (12 Hz, as I recall) with 1M memory and a 20M hard drive. Had to install Windows 3.1 to run the BIAB version I bought (or maybe to run Master Tracks?) - and had to buy an extra 1M of memory for the computer (to run Windows) - which cost $100.

I upgraded to version 6 - but never really used it much - never really embraced MIDI...

I "found" BIAB again in 2012. I have "WORE. IT. OUT." ever since...