When I was in college, I took a music appreciation class (I find it very ironic how often I use the things I learned in "filler" classes, and how seldom I use the things from my required classes!).
We learned about several studies that have shown that when you are feeling a strong emotion (joy, anger, grief), you should listen to music that matches your emotion.
While that seems like a "duh" statement, it isn't. People have a tendency, when they (or someone else) are experiencing a "negative" emotion like sorrow or anger, to put on cheerful music--which has the result of really ticking them off!
If you want to be in a better mood, first listen to music that matches, then, very gradually work your way (musically) to more cheerful songs.
So, for the one I love, whose heart is broken, I am adding a playlist of heartbroken songs. It cheers up at the end. I know you will get through this--but it won't be fun (it never is!).