Kooper produced Lynyrd Skynyrd, played with Dylan and the Stones, and formed BS&T.
The Christian rapper talks about where his trip to Haiti and his history of addiction fit into his songs.
Known in America for the hit "If You Leave," OMD is a huge influence on modern electronic music.
Brenda talks about the inspiration that drove her to write hit songs like "Get Here" and "Piano in the Dark," and why a lack of formal music training can be a songwriter's best asset.
When a song describes a wedding, it's rarely something to celebrate - with one big exception.
Outrageously gifted and just plain outrageous, Millie is an R&B and Rap innovator.
Taio Cruz throws his hands up "sometimes" in "Dynamite" because the song was originally written about surrender.
"She Loves You" by The Beatles was the song that convinced Ozzy Osbourne to make music his life. The Beatles were a big influence on him because they were also poor kids from a small town in England.
It took John Fogerty just 20 minutes to write "Fortunate Son" for Creedence Clearwater Revival's Willy And The Poorboys album..
"Izzo (H.O.V.A.)" refers to "Hova," which is what Jay-Z calls his God Name. Jay-Hova, as in Jehovah.
"Sunday Girl" was written by Blondie guitarist Chris Stein to cheer up Debbie Harry after her cat had run away whilst they were away on tour. The gray cat was called Sunday Man.
Radiohead's "Paraonid Android" was written after a confrontation in a Los Angeles bar with an irate woman.