Bill. or am I missing something??

Yes you are. BIAB is a auto song generating software which I have used from the old ATARI computer day.
My main usage is set BIAB to auto generate a Solo Improvisation around a melody. This is an excellent program and I would not look on it a purely just a sequencer as it has many wonderful thing under it's belt.
Anyone wanting to have a play can download a demo from www.pgmusic.com