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.
Buddy Holly got the title for his hit song "That'll Be The Day" from a phrase John Wayne repeats in the 1956 movie The Searchers.
Diane Warren originally wrote Aerosmith's hit tune "I Don't Want To Miss A Thing" for Celine Dion.
The Phoenix song "1901" is about Paris. Their lead singer Thomas Mars said: "Paris in 1901 was better than it is now. So the song is a fantasy about Paris."
"Jessie's Girl" was the #1 song in America when MTV went on the air. They put it in hot rotation right away, making the song even more popular.
The Devo song "Freedom Of Choice" is about mindless consumerism - how people like to make frivolous choices, but otherwise want to be told what to do.
Toto's keyboard player explains the true meaning of "Africa" and talks about working on the Thriller album.
Just like Darrin was replaced on Bewitched, groups have swapped out original members, hoping we wouldn't notice.
"Mr. Jones" took on new meaning when the song about a misguided view of fame made Adam famous.
Taylor talks about "The Machine" - the hits, the videos and Clive Davis.
The "All I Want" singer went through a long depression, playing some shows when he didn't want to be alive.
A top session musician, Carol played on hundreds of hits by The Beach Boys, The Monkees, Frank Sinatra and many others.