Eric Clapton wrote "Wonderful Tonight" while waiting for his girlfriend, Pattie Boyd, to get ready for a night out. By the time she was ready, he had written the song.
"Toxic" was the most-searched song on Google in 2004 and helped Spears become the most-searched artist that year, a title she held from 1999-2001.
Chris Rock appears on the Kanye West track "Blame Game."
"Santa Claus Is Coming To Town" is the most performed holiday song of all time, according to a Top 30 list released by the performance rights organization ASCAP in December 2014.
"Criminal" is Fiona Apple's only chart hit. Royalties from it allow her to make music on her terms, releasing albums several years apart.
If what you get equals what you give away, you might as well give it all away. That's the concept behind "Give It Away" by Red Hot Chili Peppers.
Evelyn McDonnell, editor of the book Women Who Rock, on why the Supremes are just as important as Bob Dylan.
Foreigner's songwriter/guitarist tells the stories behind the songs "Juke Box Hero," "I Want To Know What Love Is," and many more.
"When seeds that you sow grow by the wicked moon/Be sure your sins will find you out/Your past will hunt you down and turn to tell on you."
Kooper produced Lynyrd Skynyrd, played with Dylan and the Stones, and formed BS&T.
Michael tells the story of "Send Me On My Way," and explains why some of the words in the song don't have a literal meaning.
We've heard of artists putting their hearts into their music, but some take it literally.