Welcome to the forums, Andy!
I've never met a more musically sensitive bunch than the moonies. Whether they actually play an instrument or not, the ears of those who frequent this site are as finely tuned as those of any instrumentally oriented musician. The appreciation for music and the sensitivity to the aural muse has always been something I respect here and am constantly surprised at. So..whilst I'm not answering your Q in the way you intended, it's never seemed so black and white to me.
What makes a musician? To me, everyone on this site who participates and shares their musicality is a musician. Some have dedicated their musicality to learning an instrument, some not. Imho, both are musicians in their own way.
Thanks for the Q...a good one and as I said, I know I'm not answering it in the way you intended, but thanks for humouring me.
mossy
