Yes, of course you can join. There is only one condition and that is that you desist from trying to convince us that your favourite genre of contemporary popular music is folk music on the grounds that, "I like genre X, I like folk music, therefore genre X must be folk music".

Be warned, though, if you do become a member and then try telling us that, "genre X is the folk music of tomorrow" you may well find yourself 'sleeping with the fishes'.