The dirty version of Cee-Lo Green's "Forget You" contains 16 F-bombs. He recorded a clean version as an afterthought, "just in case."
Keith Richards did some studio alchemy on the Rolling Stones song "Street Fighting Man," which is all acoustic except the bass.
Ann Peebles' "I Can't Stand The Rain" originated from a comment made by the singer to her husband, Don Bryant, when they were preparing to head out to a blues show and it began tipping down with rain.
"MMMbop" by Hanson was so ubiquitous in 1997 that when the band appeared on SNL, they took part in a skit where Helen Hunt and Will Ferrell seek retribution by trapping them in an elevator and playing the song until they crack. "Now, you will suffer like we did," Hunt tells them.
"All I Wanna Do" by Sheryl Crow started with the first line from an obscure poem called "Fun" that read, "All I wanna do is have some fun."
Ronnie Van Zant wrote the Lynyrd Skynyrd classic "Gimme Three Steps" after making the mistake of dancing with a girl whose boyfriend was in the bar and probably had a gun. He asked for a 3-step head start.
We've heard of artists putting their hearts into their music, but some take it literally.
Graham Nash tells the stories behind some of his famous songs and photos, and is asked about "yacht rock" for the first time.
The Scorpions and UFO guitarist is also a very prolific songwriter - he explains how he writes with his various groups, and why he was so keen to get out of Germany and into England.
With the rise of Kindie rock, more musicians are embracing their inner child with tunes for tots - here, we look at pop stars who recorded kids' albums.
The men of Sparks on their album Hippopotamus, and how Morrissey handled it when they suggested he lighten up.
Scott was Stevie Wonder's bass player before becoming a top session player. Hits he played on include "I Will Survive," "Being With You" and "Sara Smile."