Courtney Love gave an interesting speech several years ago on this very subject:
http://archive.salon.com/tech/feature/2000/06/14/love
"If you're going to start a company that deals with musicians, please do it because you like music. Offer some control and equity to the artists and try to give us some creative guidance. If music and art and passion are important to you, there are hundreds of artists who are ready to rewrite the rules."
It's all interesting stuff and this is an area where there is limited information. Read both!