Stevie Nicks wrote "Landslide" before she joined Fleetwood Mac. She was considering going back to school when she and her boyfriend Lindsey Buckingham were asked to join the group.
According to Jason Bonham, who has filled in for his father on Led Zeppelin reunions, "Rock And Roll" is the hardest Led Zep song to play on drums.
Pink wrote "Just Give Me A Reason" about how one partner can feel jilted over something trivial, like how her boyfriend passes her the butter.
"Mr. Roboto" by Styx was written by their keyboard player, Dennis DeYoung, who used Japanese words and imagery to create an allegory about censorship.
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."
Lily Allen wrote "Something's Not Right" for the soundtrack of the Peter Pan prequel, Pan. The song was inspired by the heartache that Allen experienced after suffering a miscarriage when she was six months pregnant with her first child by husband Sam Cooper in 2010.
Billie Jean, Delilah, Sara, Laura and Sharona - do you know who the girls in the songs really are?
Joe talks about the challenges of of making a Duke Ellington tribute album, and tells the stories behind some of his hits.
In this quiz, spot the artist who put Romeo into a song lyric.
Rufus Wainwright on "Hallelujah," his album Unfollow The Rules, and getting into his "lyric trance" on 12-hour walks.
The leader of the Modern A Cappella movement talks about the genre.
