Without the radio shows, finding music on bandcamp would consist of searching for an artist you heard about, or looking through a list of artists and randomly picking one. There is also the algorithm suggestions, but that should be considered as a "heard about" like a suggestion from a friend. Think about this, if you only listen to rock music, how would you know that you also might like a rousing classical tune like Khachaturian's Sabre Dance. Might be reaching, but you know what I mean.