Alicia Keys, Elton John, Fergie, and Rihanna all sang on "All of the Lights" by Kanye West.
"Always On My Mind" was first recorded by Brenda Lee in 1971, then by Elvis in 1972. Willie Nelson's 1982 version was the big hit and won the Song of the Year Grammy.
"Angie" was the only ballad by The Rolling Stones to hit #1 in America.
Sia Furler originally sent "Pretty Hurts" to Katy Perry, but she didn't see the email, so Beyonce ended up recording it instead.
The comedian Steve Martin had a hit in 1978 with "King Tut." The Nitty Gritty Dirt Band, who Martin would open for on tour, were his backing band on the song.
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.
Don breaks down "Hotel California" and other songs he wrote as a member of the Eagles. Now we know where the "warm smell of colitas" came from.
What happens when Kurt Cobain, Iron Maiden and Johnny Lydon are told to lip-synch? Some hilarious "performances."
The former Metallica bassist talks about his first time writing a song with James Hetfield, and how a hand-me-down iPad has changed his songwriting.
The stories behind the biggest hit songs about trucking.
The leader of the Modern A Cappella movement talks about the genre.
The 5-octave voice of the classical rock band Renaissance, Annie is big on creative expression. In this talk, she covers Roy Wood, the history of the band, and where all the money went in the '70s.