It's this song right here:
This song track is scientifically proven to make us feel more upbeat, according to researchers with the University of Missouri. Neuroscientist Jacob Jolij came up with a formula for happiness by analyzing 126 songs from a 50-year period. He had 2,000 people pick their favorite song and then studied the beats per minute, theme, key, and lyrics from the top choices. And that Queen song was mentioned by close to two-thirds of those surveyed. So now we know what to play when we need a boost.
You know what else will put you in a good mood? Following me on Twitter. Just thought I'd throw that out there.