Pete Atkin is my favourite singer atm. Getting on a bit now, but his songs are so friggin' clever, you could spend a lifetime listening and not get all the obscure references. I'm not much into heavy rock tbh, just gives me a headache. Folk (proper Irish/Scots/English/Welsh folk, not redneck americans droning like planes about to collide) is good, I don't mind jazz, classical is ok (well I don't like classical period classical, but romantic/20th century classical is good), and I like early music a lot.