Hey Craig,

Interesting idea - the problem (and it's a big one) is who would this website benefit? Right now, it sounds like it would be an awesome resource for marketers/musicians to find fans - but unless there's a benefit for the fans themselves, they'd never sign up and congregate at this website.

If you want to find your audience - EVERYONE and their grandmother is on Facebook these days, you can target them with Facebook ads targeting the people who have already identified certain bands that they like who you think would be more likely to also like your music. This is obviously going to cost you money upfront, and you're also going to have to offer something to them to make it worth their while to take the action that you want them to.

If you want a site 'like Facebook' but that mainly targets musicians - that used to be Myspace (who are trying to make a comeback). Aside from that, the only thing that comes immediately to mind as a way to get music lovers to hang out in one place is (you guessed it) free music - the bane of our existence!

I think we'd all like it if we could do just one thing, go to one website, send one email or whatever and get our entire audience in one fell swoop. Unfortunately, it's more complicated than that.

The way to keep things simple is to narrow your target audience down as specific as possible and then approach them where they are already hanging out. This might mean frequenting different sites, social networks and forums - but if you really know and understand who your audience is (and track what you do) you should be able to narrow this down to specific sites and actions that actually build your list and result in sales.

If you only guess who your audience is, target too wide of a group and refuse to do any kind of meaningful metric tracking and get caught up chasing "bright and shiny objects", you're going to prolong the point where you can sustain your career indefinitely...