Hi Deane:

Are you referring to Multi-Pads? My old Yamaha PSR-2000 makes good use of them to embellish a song if the correct type of pad is selected. They can be turned on and off at will... and a different pad instrument or semi-style can be selected. Heck, if needed, all four pads can be playing while the style is chugging along during the playing of a song or melody.

I can't speak for other brands of KB's but I have not been able to do much with Multi-Pads on the Korg MicroArranger... but that's probably a learning curve thing. So far, the learning curve with the KMA has been difficult for me.

Dave Rice