Release.
I believe since music is so filled with emotions, listening to songs aids in tension release.
When the song just feels good... you know... it almost feels like your muscles are relaxing, as if you just had the as tight as possible and then let go. After a long day there is nothing better than getting home and turning up some music and releasing all the negativity the might have been placed in your body today. Here are some songs to turned way up and dance around too.