make a survey.ask your friends and find out what kinds of music they like and why they like them.

Anna likes pop music because it makes her feel that she always stays with fasion.
Bob likes rock music and he considers it a good relief listening and singing rock music when he is in depression.
Tony is definetely a big fan of folk music and he is pretty fond of those songs of natural country style.
When it comes to classic music,jazz and R&B,I would say that they are really professional and specialized which makes it a little diffult to get close to.