
If you have a whole day to kill, you can check out the full version of Pharrell Williams' "Happy" music video, the world's first 24-hour music video.

Members of the San Francisco 49ers, including Dwight Clark, Joe Montana and Ronnie Lott, sang backup on "Hip to Be Square" by Huey Lewis and the News.

Phil Collins' "Take Me Home" is about a patient in a mental institution and was inspired by the novel One Flew Over the Cuckoo's Nest.

The Sam & Dave classic "Soul Man" was re-recorded by Sam Moore and Lou Reed for the 1986 movie Soul Man, about a white guy who pretends to be black so he can get a scholarship to Harvard.

Journey lead singer Steve Perry wrote the rather dramatic "Lovin', Touchin', Squeezin'" with the opening lyrics, "You make me weep, I wanna die," after seeing his girlfriend kissing another man.

"Should I Stay or Should I Go?" by The Clash features some Spanish lines by the Texas singer Joe Ely.
The lead singer on "Da Doo Ron Ron" and "Then He Kissed Me," La La explains how and why Phil Spector replaced The Crystals with Darlene Love on "He's A Rebel."
Inspired by his dear friend, "Seasons in the Sun" paid for Terry's boat, which led him away from music and into a battle with Canadian paper mills.
Petula talks about her hits "Downtown" and "Don't Sleep In The Subway," and explains her Michael Jackson connection.
After studying in Paris with a famous composition teacher, Charles became the most successful writer of TV theme songs.
The original voice of Snap! this story is filled with angry drag queens, video impersonators and Chaka Khan.
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)."