I've always been curious about this. It is such a commitment to work on art that you know is not going to support your life. And that has always been one of my attractions to the underground, the fact that these people are killing themselves to create something that they believe in.
Which begs the questions, have any of these people (Sonic Youth aside) that have made an impressive living through creating an unlistenable racket, or people that have come from money making it easier to follow their passion?
listen to pink reason