I still can remember going to band practice (accordion)(Duluth Accordionares)(What! You haven't heard of them?)
http://genny.lib.umn.edu/sample.mp3 Anyway, going to lessons and always sneaking away to the Lowery Organ room. For me, those were my first arranger keyboards. Accompaniment, one-touch play, different registers other than organ sounds. Crude by today's standards (this was the early 70's) but oh what a blast to get to play with a rhythm section and play what I wanted to play. I was hooked.
Playing an arranger keyboard is only a pastime for me, but I can't think of a better way to pass the time.
mike