What music do you listen to when you are in a happy mood or to put you in a happy mood?

There’s no doubt that listening to your favorite music can instantly put you in a good mood. But scientists are now discovering that music can do more for you than just lift your spirits.Fresh research from Austria has found that listening to music can help patients with chronic back pain.
And a recent survey by Mind - the mental health charity - found that after counselling, patients found group therapy such as art and music therapy, the most useful.

I love to listen all type of music but when I am in good mood I prefer upbeat song.