The lyrics for "Mary, Did You Know?" were written by Christian singer and comedian Mark Lowry, after his pastor asked him to write a Christmas musical for their church. Southern gospel musician Buddy Greene later added music to his words.
Michael Jackson's "Human Nature" was written by the keyboard player from Toto, who was working on the Thriller album.
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.
The drum sound on Buddy Knox's 1957 US #1 hit "Party Doll" was actually made by a cardboard box filled with cotton.
The James Blunt song "You're Beautiful" is not romantic: it's a about a creepy subway encounter with an ex.
"Dirty Water" became a Boston sports anthem in the '00s, but it was written by a guy from California after almost getting mugged on a visit to the city.
The country sweetheart opines about the demands of touring and talks about writing songs with her famous father.
Deep Purple's guitarist since 1994, Steve talks about writing songs with the band and how he puts his own spin on "Smoke On The Water."
Mike Rutherford talks about the "Silent Running" storyline and "Land Of Confusion" in the age of Trump.
Martyn talks about producing Tina Turner, some Heaven 17 hits, and his work with the British Electric Foundation.
On the "schizoid element" of his lyrics, and a famous line from "Everything Zen."
Rufus Wainwright on "Hallelujah," his album Unfollow The Rules, and getting into his "lyric trance" on 12-hour walks.
