Judging people by the instrument they play
When I was a music education major, we discussed how you can stereotype people by their instruments. Trumpet players all think they are the Don Juan's of the orchestra. Oboe players have beady eyes. Sax players are really laid back. Low Brass players always look like they have a hangover.
For orchestra/band I play tuba. I like to play organ/piano. I don't think my voice is good, but the most perfect instrument in the world is the human voice. (here we go again strel)