Train's guitarist had to Google an instructional video to learn how to play the ukulele for "Hey Soul Sister."
The song "Don't Worry Be Happy" doesn't use any instruments - it's all Bobby McFerrin using various parts of his body to make the sounds.
Icona Pop consider "I Love It" a kiss-off to their boyfriends. "We just wanted to get the song out and get the pigs to hear it," group member Jawo said.
Hoyt Axton wrote the Three Dog Night hit "Joy To The World." He said the "Jeremiah was a bullfrog" line just came into his head after having a drink of wine.
In 2004, the word "Bootylicious" made the Oxford English Dictionary, three years after the Destiny's Child song was released. Definition: "Blend of booty buttocks and delicious."
Bob Seger got inspired to write "Night Moves" after watching the movie American Graffiti, which showed young people growing up in his "neck of the woods."
Joe talks about the challenges of of making a Duke Ellington tribute album, and tells the stories behind some of his hits.
A drummer for one of the most successful metal bands of the last decade, Chris talks about what it's like writing and performing with Slipknot. Metal-neck is a factor.
Donny Osmond talks about his biggest hits, his Vegas show, and the fan who taught him to take "Puppy Love" seriously.
The Creed lead singer reveals the "ego and self-fulfillment" he now sees in one of the band's biggest hits.
Did Al play on a Beach Boys record? Did he have beef with George Lucas and Coolio? See if you can spot weird but true stories.
The lead singer/lyricist for Anberlin breaks down "Impossible" and covers some tracks from their 2012 album Vital.