Here’s a quick recap:
Community 1: Are your Super Fans (http://arielpublicity.com/2010/04/29/your-three-communities-part-1/)
These are fans who are primarily Your Live Audience. You know them by name. If you play out live, they attend your shows regularly, and buy many things you offer (not just music). If you have a street team they are on it and they evangelize strongly on your behalf.
Community 2: Are your Engaged Fans (http://arielpublicity.com/2010/05/05/your-three-communities-part-2/)
These fans are your Active Online Audience. They are newsletter subscribers, , blog readers, video watchers, RSS subscribers, active Social Media engagers who frequently comment & engage with you on Facebook, Twitter, and other sites.
This last installment focuses on:
Community 3: Ambient Fans
These fans are your Passive Online Audience and they are your social media friends who are aware of you via Twitter, Facebook, MySpace, Last.fm etc but don’t actively communicate with you and may not have even heard your music (yet).