I've been doing one or two things as you know.Good luck and have nice SIDding
M64 is more my program for MIDI work but who knows what I could rustle up. And as assemblers are my least favourite, bringing in a pre-made MIDI doodle would help me plenty. And piano roll DAW work would make it so easy to split the chords across the channels. I'll also look forward to playing with software to convert humming to MIDI, removing the keyboard middleman when getting my flashes of inspiration in.
To everyone still making the C64 gear and software, you're the tops.