Not sure what section to put this in. I can play some keys and was inspired by Tony Levin the other night, as he was playing a small (37 key?) synth, going back and forth between bass and keys - and sometimes both at the same time. I was wondering how many here double like that, and what you're using. NOvation and Korg both have 37 key units (full size keys) that seem like they might work. I'd want reasonably small/light just for logistic purposes, and I'd mostly be either doing a synth bass line or arpeggiated background lines.