"Reasons" by Earth, Wind & Fire is a popular wedding song, but it's actually about a one-night stand.
Jay-Z did the rap on Beyoncé's "Crazy In Love" at the last minute. They had just started dating; she asked him to feature on the track the night before she had to turn in her album.
In 1979, Madonna was a dancer on Patrick Hernandez' tour, where she boogied to his hit "Born To Be Alive."
The Fratellis song "Chelsea Dagger" was named for their lead singer's wife - it was her burlesque name.
Jethro Tull lead singer Ian Anderson wrote "Aqualung" after looking at pictures of homeless men that his wife took. She got a co-writing credit on the song.
No Doubt's hit "Don't Speak" is about Gwen Stefani's breakup with the band's bass player, Tony Kanal, after seven years together.
Justin wrote the classic "Nights In White Satin," but his fondest musical memories are from a different decade.
The man who ran Nirvana's first label gets beyond the sensationalism (drugs, Courtney) to discuss their musical and cultural triumphs in the years before Nevermind.
Graham Nash tells the stories behind some of his famous songs and photos, and is asked about "yacht rock" for the first time.
One of the first successful female singer-songwriters, Janis had her first hit in 1967 at age 15.
How well do you know this shock-rock harbinger who's been publicly executed hundreds of times?
