What #1 hit is built on a sample of another #1 hit? "Hypnotize" by The Notorious B.I.G., which gets its groove from "Rise," a chart-topper for Herb Alpert in 1979.
Van Morrison's "Brown Eyed Girl" was originally called "Brown Skinned Girl," and was about an interracial relationship.
Jimmy Webb was inspired to write The 5th Dimension song "Up-Up and Away" after seeing a hot-air balloon his friend flew on promotions for the Southern California radio station KMEN.
Train wrote the 2011 song "Brand New Book" for the TV show The Biggest Loser - part of the song was used in the opening credits.
Sia Furler originally sent "Pretty Hurts" to Katy Perry, but she didn't see the email, so Beyonce ended up recording it instead.
The Pretenders are named after the 1956 song "The Great Pretender" by The Platters.
Martyn talks about producing Tina Turner, some Heaven 17 hits, and his work with the British Electric Foundation.
Have you got the smarts to know which of these graduation song stories are real?
Genesis' key-man re-examines his solo career and the early days of music video.
A Soul Train dancer takes us through a day on the show, and explains what you had to do to get camera time.
Oliver Leiber talks about writing and producing hits for Paula Abdul, and explains his complicated relationship with his father, the songwriter Jerry Leiber.
Rob Thomas on his Social Distance Sessions, co-starring with a camel, and his friendship with Carlos Santana.