Musician Portal/Community

I’m looking to develop an online community for musicians and fans, similar to purevolume.com, reverbnation.com, unsigned.com etc. Does WordPress have any themes/plugins/extensions/modifcations etc. which would allow such site to be developed easily? Most of the features I had in mind are available with Jamroom (jamroom.net), but they are currently rewriting their software which would not be backwards compatible with their current version, so I’m investigating alternatives. I’ve seen many WP themes that are designed for single artist/bands/musicians etc., but I have not found any so far that are geared towards multiple artists. I also have not come across any WP sites that’s similar to what I want to do. Any assistance would be greatly appreciated.