Regardless of genre, it's a goal of virtually every artist in every genre to grow a sizable fanbase and, if one plays their cards right, Facebook can be an excellent way to find and reach these potential fans.
In this recent post to MusicThinkTank, Jon Ostrow helps artists work to develop and grow than fanbase using Facebook, both as a marketing and social platform.
"The first and most important way to get new fans is simply to have great content. What “great” means may be different for every fan base, but ultimately you’re looking for content that drives interest in you and is engaging enough to keep your fans coming back for more. If you can create content that drives fans to share with others, even better."