Justin Timberlake originally wrote "Gone" for Michael Jackson, but his team turned it down, so 'N Sync cut it instead.
An unknown Kesha (known then as Ke$ha) sang on Flo-Rida's #1 hit "Right Round," but refused to appear in the video because she wanted to make a name for herself.
Kacey Musgraves offered "Follow Your Arrow" to her friend Katy Perry, but Perry thought Musgraves should record the song herself, telling Kacey it seemed "like something that you would totally say."
"Kashmir" is the only Led Zeppelin song to use outside musicians, as it needed strings and horns.
"Paper Planes" was inspired by M.I.A.'s hassles trying to get a visa to enter America.
Willa Ford came up with her hit "I Wanna Be Bad" when her record company told her to tone down her music in a effort to differentiate her from Britney Spears and Christina Aguilera, who were in their "bad girl" eras.
The "Lowdown" and "Lido Shuffle" singer makes a habit of playing with the best in the business.
Was Long Tall Sally a cross-dresser? Did he really set his piano on fire? See if you know the real stories about one of rock's greatest innovators.
The 2011 Artist of the Year at the Dove Awards isn't your typical gospel diva, and she thinks that's a good thing.
The Guns N' Roses rhythm guitarist in the early '90s, Gilby talks about the band's implosion and the side projects it spawned.
Untangling the events that led to the "Stairway To Heaven" lawsuit.
Mike is lead guitarist with Tom Petty & the Heartbreakers, and co-writer of classic songs like "Boys Of Summer," "Refugee" and "The Heart Of The Matter."