So I've got a Yamaha PortaSound PSS-360 that I just found. I used to play with it a lot when I was just getting into electronic music and the like, but I have a problem that I still haven't been able to solve.
It has some drum keys, but I can't figure out how to access them. I did it one time, but I can't seem to do it again. Anybody got any experience with it?