"Lean On" was originally sent by Major Lazer to both Rihanna and Nicki Minaj's camps as a slower reggae track. After both parties rejected the tune, Major Lazer recruited Danish singer MØ to supply vocals and they recorded it themselves.
Harry Chapin's wife Sandy wrote the lyrics to "Cat's In The Cradle," which were actually about her first husband.
"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."
The biggest hit of 2015 was "Uptown Funk," a collaboration between Bruno Mars and guitarist/producer Mark Ronson. Ronson says making it took "six or seven months of chasing Bruno around on tour."
"Who Let The Dogs Out" won a Grammy. It took the award for Best Dance Recording in 2000.
"Walking on a Thin Line" by Huey Lewis and the News is about an American soldier who is trained as a sniper in the Vietnam War. It was written for a documentary on the war.
Dan cracked the Top 40 with "Ritual," then went to India and spent 2 hours with the Dalai Lama.
Can you name Def Leppard's only #1 hit in America? Get rocked with this adrenalized quiz.
Rob Halford, Richie Faulkner and Glenn Tipton talk twin guitar harmonies and explain how they create songs in Judas Priest.
Tom talks about the evolution of Cinderella's songs through their first three albums, and how he writes as a solo artist.
"Missing You" was a spontaneous outpouring of emotion triggered by a phone call. John tells that story and explains what MTV meant to his career.
Chris Stein of Blondie shares photos and stories from his book about the New York City punk scene.