My god what a wonderful thing this music is. I mean it helped me out of a depression. The thing is that it's not the type of music you'd expect to hear to get you out of one.
The groups name is Infected Mushroom and one of their songs, I Wish, is absolutely magnificent. These guys have made me fall in love with techno music and now I can't get enough. Converting Vegetarians is by far my favorite album by them. And I have every one.
Music is great and can help you out a lot. Try the Audio Portal once in a while too, I have nearly 100 tracks from there and the list is constantly growing.