WHAT IT LOOKS LIKE AS SOON AS A MIDI KEY IS HIT (UNLESS YOU DISABLE DISPLAY FOR SMOOTHER RESPONSE) There is no more access to LOAD and SAVE and KEYBUTTONS on C64, but all front page effects and chords will work. And with MIDI ENABLED you now have 16 fast presets instead of only 10.(Fast presets will be at the top of the SOUNDS memory where most PROGRAM CHANGE will not reach.