Mr. Blue Sky Is The Happiest Song On Earth, According To Science

1973: Electric Light Orchestra film US TV show in London's Trafalgar Square © Chris Walter (Photo by Chris Walter/WireImage)

"Mr. Blue Sky" by Electric Light Orchestra is a joyous chunk of '70s rock as only ELO's musical genius Jeff Lynne could deliver. But its bouncy rhythms and soaring choruses aren't merely to our liking (or yours) -- they've been scientifically proven to be happiness-inducing. According to analysis of the song's composition, it's the happiest classic rock tune on record.

To refresh your memory, here's "Mr. Blue Sky:"

Read on for the story behind its formula for happiness.