"If It Makes You Happy" by Sheryl Crow is about the sour grapes some of her collaborators from her first album expressed to the media when they felt slighted.
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.
Feist's "1234" is "about lost love, and the hope to recapture what you once had," but it's best known for the Sesame Street version about counting to four.
Hugh Laurie, star of the TV show House, had a minor hit in 2011 with "Police Dog Blues," an old Blues song from 1929.
The Simpsons theme song was composed by Danny Elfman, who went on to write music for films like Edward Scissorhands and Men In Black. He had a band at the time called Oingo Boingo, which did the theme song to the 1985 movie Weird Science.
Pete Townshend wrote the lyrics for "My Generation" by The Who during a train ride from London to Southampton on his 20th birthday when he was thinking about "trying to find a place in society."
Nick made some of the biggest videos on MTV, including "The Final Countdown," "Heaven" and "Don't Know What You Got (Till It's Gone)."
After cutting his teeth on hardcore punk videos, Paul defined the grunge look with his work on "Hunger Strike" and "Man in the Box."
The frontman for one of Canada's most well-known punk rock bands talks about his Eddie Vedder encounter, Billy Talent's new album, and the importance of rock and roll.
The men of Sparks on their album Hippopotamus, and how Morrissey handled it when they suggested he lighten up.
Dave reveals the inspiration for "Feelin' Alright" and explains how the first song he ever wrote became the biggest hit for his band Traffic.
A drummer for one of the most successful metal bands of the last decade, Chris talks about what it's like writing and performing with Slipknot. Metal-neck is a factor.