I play the keyboard and trumpet. I also play a little guitar (not a small guitar), but not enough to vote for it.
What on earth is an Appalacian Dulcimer?

Flute (and by default a little piccolo and oboe), but mostly flute.
984, did you get all creative on the poll again?
I’d say so, but whatever, I should’ve put more options.
Well I have played guitar and bass for a while, but of all my ears, my techno ear is largest, and I must pick keyboard, as it can basically, aurally, be substituted for any other instrument ever, though it does not always sound as fluid as the real thing, again, versatility is the key, so for the tiny sacrifice, it is totally worth it. Plus, the first time I visited a cathedral with a working pipe organ, I was able to rock out on it, as I knew how to play the keys, it was a really triumphant moment.