Ariana Grande's hit "Problem" started off as a track written by One Direction songwriter Savan Kotecha. He gave it the working title of "The Whisper Song," after a 2005 Ying Yang Twins hit.
"Cotton Eye Joe" is a folk song dating to the 1800s, but it became a hit when a Swedish act called Rednex did a psychokinetic version in 1994.
Paul McCartney's favorite song that he wrote for someone else is Cilla Black's 1968 UK Top 10 hit "Step Inside Love."
The definitive Dave Matthews Band song, "Ants Marching" is a look at monotony, something they avoid by improvising at concerts and mixing up their setlists.
Bobby Freeman's '50s hit "Do You Want To Dance" was also a Hot 100 hit for Del Shannon, The Beach Boys, The Mamas & the Papas, Bette Midler and the Ramones.
Prince kept doves at his Paisley Park mansion. And yes, sometimes they did cry.
Yngwie Malmsteen and Steve Vai were two of Graham's co-writers for some '80s rock classics.
The Bush frontman on where he finds inspiration for lyrics, if his "machine head" is a guitar tuner, and the stories behind songs from the album The Kingdom.
10 Questions for the author of Precious Metal: Decibel Presents the Stories Behind 25 Extreme Metal Masterpieces
With the rise of Kindie rock, more musicians are embracing their inner child with tunes for tots - here, we look at pop stars who recorded kids' albums.
When singers started spoofing their own songs on Sesame Street, the results were both educational and hilarious - here are the best of them.
The stories behind the biggest hit songs about trucking.