Hi Larry:

As I'm sure you know, a Midi control change message is different than a Sysex message. Sustain is not supported via Sysex, but instead, via midi control change 64 message, so if you're able to program the Midi Solutions Foot Controler Box to send out midi control change message 64 (sustain) to your PSR2000, then this will work great as you could then assign the dedicated PSR2000 footcontrolers 1 & 2 to vocal harmony & fill to self.

To me, utilizing the 'fill to self' function can turn an average performance into a terrific one. When I play, I keep 'auto fill' turned on so that whenever a variation button is selected, it's preceded by a fill (as is customaryily played by live drummers). In addition, I like to occasionally add fills every 4 bars (no hard rule though). Utilizing 'fill to self' adds 'live' drum fill spontaneous energy & realism which isn't there with auto accomp drums alone, and well worth the $100 investment (if required) on the PSR2000 to achieve this. I'm anxious to hear how the Midi Solutions midi Footswitch box works out for you. - Scott