Here are ways to do it besides a co-op, although that's interesting too. * Word of mouth * Expert advice * Music discussion forums * Going to see shows/conc

Here are ways to do it besides a co-op, although that's interesting too. * Word of mouth * Expert advice * Music discussion forums * Going to see shows/concerts. (Bands you like often have openers you might like.) * A locally run algorithm that samples music released online to find suggestions (a local Pandora/Spotify rather than a service)