What #1 hit is built on a sample of another #1 hit? "Hypnotize" by The Notorious B.I.G., which gets its groove from "Rise," a chart-topper for Herb Alpert in 1979.
Andre 3000 played all the instruments on Outkast's "Hey Ya" except bass. Aaron Mills from Cameo played that.
"Closing Time" by Semisonic was written by the lead singer when his wife was pregnant. Some of the lyrics are about being born.
Ellie Goulding's hit single "Burn" was originally demoed by Leona Lewis for her 2011 Glassheart album. She scrapped the tune when the project was retooled to include more ballads.
Whitney Houston's "I Wanna Dance With Somebody" is a joyful-sounding song with lyrics that are surprisingly somber: "when the night falls, loneliness calls." It's co-writer explained: "Many of our friends were in this boat - 5 o'clock comes around, they start getting restless."
You wouldn't know it from the upbeat melody, but "Walkin' On The Sun" by Smash Mouth is about the 1992 Los Angeles Riots.
Doubt led to drive for Francis, who still isn't sure why one of Status Quo's biggest hits is so beloved.
Many unusual folks appear in Grateful Dead songs. Can you identify them?
Is "Have You Ever Seen the Rain" about Vietnam? Was John Fogerty really born on a Bayou? It's the CCR edition of Fact or Fiction.
Iron Maiden, Adele, Toto, Eminem and Earth, Wind & Fire are just some of the artists with songs directly inspired by movies - and not always good ones.
Elvis, Little Richard and Cheryl Cole have all sung about Teddy Bears, but there is also a terrifying Teddy song from 1932 and a touching trucker Teddy tune from 1976.
How well do you know your David Bowie lyrics? Take this quiz to find out.