Everything... But here are some specifics
  1. The happiness I get when a song I haven't heard in a while comes on the radio
  2. The way it gives me joy when I am happy
  3. The way it is like a friend just letting me cry, when I am sad
  4. How it pumps me up when I am getting ready to go out
  5. How it relaxes me when I am anxious
  6. How I can find a song that matches any mood
  7. How I am never more myself than when I am at a concert. Carefree. I dance without worrying about what anybody thinks!!