So, music is pretty much free. In general, people aren't going to go out of their way to pay for music when it's pretty simple to youtube anything you want to listen too. Musicians can still make some money though performances, licensing, merch, etc..
Bitshares music/peertracks vision is to bring artist and fans closer together to cut out middle men and I think that's a great idea. So here are some rough ideas that i want to share with the community that I think would be neat.

1.  I suggest rather than focusing on selling music, artist only sell shares (artist coins) and they provide tools for the fans who buy their shares to become promoters and agents. For example, I'm scrolling through the site listening to tracks, I find something I like, I say "hey that's pretty good" and then I click an up arrow to buy 1000 of their artist coins because I think they might catch on.

2. Artist shares need to have some promise of value so artist should reward their fans who help promote them in some way. Ideally they could pay out dividends. I'm not sure about the legality of all this but one way to get around this might be to consider the fans that you're paying dividends to as a co-artist or something along those lines.

So for example,  a  fan/shareholder can book a show for an artist to help put together an upcoming tour and if the artist accepts the gig the fan can be rewarded(maybe in artist coins) and the artist can pay out dividends to all the fans once they have been paid. The important part would be making this process easy for your fans so they can do this without a back in forth email conversation.  They simply submit a form with the details and wait for the artist to confirm.

Anyway, thanks for letting me share some musings with you all.

Edit: Title didn't match