Katy Perry says her 2008 song "Ur So Gay" is about "guys who wear the guyliner, steal your jeans, and that whole almost hipster emo scene."
"I Swear" was a #1 country hit for John Michael Montgomery before All-4-One made it a #1 pop hit.
The Mission: Impossible theme is in 5/4 time. Composer Lalo Schifrin joked that he did it so 5-legged aliens could dance to it.
Avril Lavigne's 2011 song "Darlin" was written much earlier; she says it's the second song she ever wrote, composed when she was an unsigned 15-year-old living in Napanee, Ontario. The song reflects those years when she was "trying to figure it all out."
Al Gore chose an inspiring but obscure campaign song when he ran for president in 2000: "Let The Day Begin" by The Call.
The song "Without You," a hit for Nilsson in 1972 and Mariah Carey in 1994, was written and originally recorded by Badfinger in 1970.
With his X-wife Exene, John fronts the band X and writes their songs.
The Prince-penned "Manic Monday" was the first song The Bangles heard coming from a car radio, but "Eternal Flame" is closest to Susanna's heart, perhaps because she sang it in "various states of undress."
Surprise exits, a catfight and some very memorable performances make our list of the most memorable Idol moments.
Psychedelic Furs lead singer Richard Butler talks about their first album since 1991 and explains what's really going on in "Pretty In Pink."
Taylor talks about "The Machine" - the hits, the videos and Clive Davis.
When you free your mind, your ass may follow, but you have to make sure someone else doesn't program it while it's wide open.