Ian Anderson wrote "Aqualung" after looking at pictures of homeless men that his wife took. She got a co-writing credit on the song.
John Legend wrote "All Of Me" about his fiancée Chrissy Teigen. He sang it to her at their wedding ceremony in Como, Italy.
Mike Campbell from Tom Petty & the Heartbreakers played the slide guitar on "Sixth Avenue Heartache." There is a connection here - Wallflowers lead singer Jakob's dad, Bob Dylan, played with Tom Petty in The Traveling Wilburys.
"Constant Craving" by k.d. lang deals with principles of Buddhism, including the cycles of birth and death.
The Texas songwriter Jerry Jeff Walker wrote "Mr. Bojangles" after a weekend in jail where a fellow inmate told him his life story.
Scott Stapp of Creed wrote "With Arms Wide Open" when he found out he was going to be a dad. He named his son Jagger.
She thinks of herself as a "song interpreter," but back in the '80s another country star convinced Emmylou to take a crack at songwriting.
A Soul Train dancer takes us through a day on the show, and explains what you had to do to get camera time.
On Glen's résumé: hit songwriter, Facebook dominator, and member of Styx.
Genesis' key-man re-examines his solo career and the early days of music video.
Keyboard great David Sancious talks about his work with Sting, Seal, Springsteen, Clapton and Aretha, and explains what quantum physics has to do with making music.
Many actors have attempted music, but only a few have managed a hit. Do you know which of these thespians charted?