Rick Estrin gave me some good advice on dressing for a gig: "There
should never be any question as to who's the band and who's the fan."
Some great father of the blues, I think it was Howlin' Wolf, once
said, and I'm paraphrasing,
"(As a musician) you should always dress respectfully, wearin' a
suit. When you're wearin' a suit, people know you as one of two
things. Either a musician, or a preacher."