Whenever I'm in a bad mood, I'll switch on some music and BAM! Gone. If I need an energy boost in the morning (and who doesn't? *yawn*) , I'll put on some music to pump me up. There's no need for caffeine here! Music is amazing because it works for any mood. Sad? There's a song for that.
Just take a second and picture your favourite movie. Now, picture the movie with out music, it doesn't seem as interesting does it? Take an epic explosion scene, where the person is casually walking away, and picture it with no music. How ridiculous would that be?
Music is one of the few things that bridges the language gap that exists. I love listening to music from other countries, it's great to experience their unique taste of music. Ex. Celtic music, I absolutely love it. African music