Jonah Hill directed the video for Sara Bareilles' song "Gonna Get Over You." It's a mash-up of Grease and West Side Story.
Thomas Dolby wrote "She Blinded Me With Science" so he could direct the video, which was inspired by silent films and set in a "home for deranged scientists."
Meghan Trainor and her producer Kevin Kadish originally wrote "All About That Bass" for another artist to record. However, after Epic Records boss LA Reid heard Meghan play a demo of the song on a ukulele, he signed the young songwriter to his label and told her she should sing it.
Taio Cruz throws his hands up "sometimes" in "Dynamite" because the song was originally written about surrender.
"Always On My Mind" was first recorded by Brenda Lee in 1971, then by Elvis in 1972. Willie Nelson's 1982 version was the big hit and won the Song of the Year Grammy.
Sia planned to quit her solo career after her 2014 album 1000 Forms of Fear, but the "Chandelier" video proved so popular it drew her back in.
Rick has a surprising dark side, a strong feminine side and, in a certain TV show, a naked backside. But he still hasn't found Jessie's Girl.
If counterpoint and polyrhythms are your thing, you might love these guys. Even by Progressive Rock standards, they were one of the most intricate bands of the '70s. Then their lead singer gave us Bon Jovi.
You may not recognize his name, but you will certainly recognize Peter Lord's songs. He wrote the bevy of hits from Paula Abdul's second album, Spellbound.
Call us crazy, but we like it when an artist comes around who doesn't mesh with the status quo.
Gramm co-wrote this gorgeous ballad and delivered an inspired vocal, but the song was the beginning of the end of his time with Foreigner.