Many people have their choice of music no? And that music is what makes them feel good or release what their feeling? What music relieves you from every thing?
I've got alot, really, Hendrix, Marley, Tinariwen, all sort of one mood, but then you've got Nirvana, Nickleback, things like that. Sa Ding Ding for other moods, i think it depends on the time, but, provided it's deep and has a message through it, even if that's just an emotion, then i thing it's meaningful, and nothing can beat meaningful music.
I think you listen to different types of music depending on how you are feeling, and music can make you feel differently, it can vent your anger, or lift your spirits, or just relax you. I like Nickelback for just about all emotions they have something that fits.