I’m having trouble getting my FCB 1010 to play notes on my Grandstage. I see that I can change presets on the GS, but how do I get it to play notes? For example, I play guitar and I would like to play under lying notes (chords would be even better) with my feet, via the FCB101. So button 1 is a D, button 2 is a G, and so on. Is this doable? Thanks for any direction.