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To put it another way: you don't have to be a musician to perform "folk music." People who perform classical music are generally musicians (keep in mind that I'm not saying they are necessarily professional or paid).

Hmmm I think this would call for another thread about what we call a musician.  To me you don't need a diploma or classical training to be a musician.  I know musicians who have had a lot of schooling and training and that by no means makes them a good musician.  On the other hand there are popular musicians who have very little training but have a good way speaking to us through their music. That's a good musician and an artist.

A classical musician playing from notes something that was written hundreds years ago maybe a good musician but not much of an artist. You could say the classical musician is painting by numbers while a good pop/rock musician is painting from heart. Who would you say is more of an artist?

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