This music thing probably depends on the person. Iff, when you throw the angry music out of the library, can you give it to me, I'm running out of them and listening to the old ones doesn't give the same kick any more.
Not that I'm violent or anything, far from it. But I have found that listening to angry music helps taking my anxiety away. Just yesterday I had to listen two hours of Limp Bizkit and Linkin Park and some other stuff and while it's not all gone(anxiety), it's much less. I have tried listening to merry and happy music, I have loads of it and if I'm a happy bunny then I like it very much.