A roadie for the Allman Brothers came up with the line "The road goes on forever" for "Midnight Rider," and got a songwriting credit for his contribution.
When the Velvet Underground song "Heroin" got screechy, Maureen Tucker stopped drumming, figuring it would bust the take, but her bandmates kept going. You can hear it at the 5:20 mark.
The Kate Bush song "Why Should I Love You?" is a collaboration with Prince. He completely re-worked her demo, so Bush spent a lot of time piecing it back together to keep her imprint.
Before recording "Boom Clap" herself, Charli XCX offered the song to Hilary Duff. However, the singer's people turned down the tune declaring it wasn't "cool enough for Hilary."
In "I Walk The Line," Johnny Cash hums before each verse. He did this to get his pitch, as the song changes key several times.
Wang Chung's '80s classic "Dance Hall Days" is about how things can start simple but end up complex. First you "take your baby by the hand," but by the end she has an amethyst in her mouth.
John Lennon, Paul Simon and Lynyrd Skynyrd are some of the artists who have written revenge songs. Do you know who they wrote them about?
Before he was the champ, Ali released an album called I Am The Greatest!, but his musical influence is best heard in the songs he inspired.
After cutting his teeth on hardcore punk videos, Paul defined the grunge look with his work on "Hunger Strike" and "Man in the Box."
The Garbage drummer/songwriter produced the Nirvana album Nevermind, and Smashing Pumpkins' Gish and Siamese Dream.