A Pro musician plays an instrument. This does not include drums, comb and tissue paper, triangle, two sticks on a coffee can etc. (ha, ha). The Pro musician also plays a variety of musical styles and is able to jam on the spot with other musicians, period.

Any other method probably means you are an entertainer or at best an extremely lazy musician and if you are a musician and won't play your instrument. I mean pathetically lazy if you fit this description.