Members of the San Francisco 49ers, including Dwight Clark, Joe Montana and Ronnie Lott, sang backup on "Hip to Be Square" by Huey Lewis and the News.
"Kickstart My Heart" is about all the ways Motley Crue gets their blood flowing without drugs. It was inspired by their bass player Nikki Sixx, who claimed he had to be revived with a shot of adrenaline to the heart after an overdose.
Christina Perri's "Jar Of Hearts," written about her ex, became a big hit after it was used in a routine on So You Think You Can Dance.
Taio Cruz throws his hands up "sometimes" in "Dynamite" because the song was originally written about surrender.
The Bryan Adams song "(Everything I Do) I Do It For You" was almost rejected for the movie Robin Hood: Prince Of Thieves because it didn't sound medieval enough.
Pink Floyd's "Talkin' Hawkin'" uses a sample of Stephen Hawking's synthesized voice taken from a speech he made for a 1994 British Telecom commercial.
Some songs get a second life when they find a new audience through a movie, commercial, TV show, or even the Internet.
Roger reveals the songwriting formula Clive Davis told him, and if "Eight Miles High" is really about drugs.
The original voice of Snap! this story is filled with angry drag queens, video impersonators and Chaka Khan.
Dan cracked the Top 40 with "Ritual," then went to India and spent 2 hours with the Dalai Lama.
The Third Day frontman talks about some of the classic songs he wrote with the band, and what changed for his solo country album.
Tom talks about the evolution of Cinderella's songs through their first three albums, and how he writes as a solo artist.