I remember reading about an orchestra that was sued for discrimination.
HOWEVER it failed when it was pointed out the auditions were behind a visually opaque but sound transparent screen so those interviewing could ONLY judge based on sound alone. There was no way to have any appearance or look come into the judgment.
This thread seems to point out how some people are just would up a bit too tight.
Axl Rose would sound MUCH better if he used a guitar from Kmart. He's talentless, but noisy.