What piece of music makes you feel more optimistic about the world?

I actually tested this out. It's not the only song that does this for me. But when I play it, small things that otherwise would have been annoying to me don't seem as annoying. I have a habit of looking at things with skepticism and focusing on the negatives. So it helps me take a step back to see things from a different perspective. A more hopeful one.
What piece of music makes you feel more optimistic about the world?
Post Opinion