Music is a rather controversial issue, even among Sunni.This
is the most cited Hadith regarding the subject matter from the bit of reading I've done regarding it being haram. There are some people (mainly Sufis) who use this
as justification that music is not haram.
If one were to nitpick though, neither of them deal with music directly. The first I linked is related to musical instruments and the second talking about vocal performances.