Ingo, I will have to check my a80 when i get back home to houston to see if my aftertouch still works. I once owned an A80, but that's long ago so my memory is a little vague. The A80 of course can send MIDI Program Change messages. AFAIR it cannot send Bank Select messages. I used Program Change messages to make the S-760 load volumes from disk (ZIP drive in my case). This worked very well. Does aftertouch still work on your A80? When I got mine back then, I had to replace the sensors. Polyphonic aftertouch is a great feature that not many keyboards offer. On the S-760 it can be used to control filter cutoff for instance. Ingo