If you have a whole day to kill, you can check out the full version of Pharrell Williams' "Happy" music clip, which was the world's first ever 24-hour music video.
Lorde was 16 years and 11 months old when "Royals" topped the Hot 100. In doing so she became the youngest ever solo artist to write and perform a #1 hit.
The Doobie Brothers' swampy #1 hit "Black Water" is about the Mississippi River, evoking the rafting adventures Mark Twain and Huckleberry Finn.
The lyrics to "Heartbreak Hotel" were written by a steel guitar player who was once a dishwasher repairman. He was inspired by a newspaper story about a man who killed himself and left behind a note saying only, "I walk a lonely street."
You wouldn't know it from the upbeat melody, but "Walkin' On The Sun" by Smash Mouth is about the 1992 Los Angeles Riots.
"Angie" was the only ballad by The Rolling Stones to hit #1 in America.
Taylor talks about "The Machine" - the hits, the videos and Clive Davis.
Rick has a surprising dark side, a strong feminine side and, in a certain TV show, a naked backside. But he still hasn't found Jessie's Girl.
The lead singer and pianist for Procol Harum, Gary talks about finding the musical ideas to match the words.
Did Eric Clapton really write "Cocaine" while on cocaine? This question and more in the Clapton edition of Fact or Fiction.
The flautist frontman talks about touring with Led Zeppelin, his contribution to "Hotel California", and how he may have done the first MTV Unplugged.
Evelyn McDonnell, editor of the book Women Who Rock, on why the Supremes are just as important as Bob Dylan.