Jethro Tull lead singer Ian Anderson wrote "Aqualung" after looking at pictures of homeless men that his wife took. She got a co-writing credit on the song.
Shaggy wrote his swaggering hit "Boombastic" after learning what "shag" means in the UK.
Jon Bon Jovi earned his first movie credit - Young Guns II - by writing "Blaze Of Glory" for the film.
Blur's "There Are Too Many of Us" was inspired in part by a siege in an Australian chocolate café that Damon Albarn witnessed, which resulted in the death of the gunman and two hostages.
"Reasons" by Earth, Wind & Fire is a popular wedding song, but it's actually about a one-night stand.
Rihanna claims that "S&M" is about her love/hate relationship with the media. Apparently her paparazzi are using whips and chains.
Martyn talks about producing Tina Turner, some Heaven 17 hits, and his work with the British Electric Foundation.
Shaun breaks down the Seether songs, including the one about his brother, the one about Ozzy, and the one that may or may not be about his ex-girlfriend Amy Lee.
The lead singer of Everclear, Art is also their primary songwriter.
Genesis' key-man re-examines his solo career and the early days of music video.
"How much does it cost? I'll buy it?" Another songwriter told Jonathan to change these lyrics. Good thing he ignored this advice.
Despite her reticent personality, Adele's life and music are filled with intrigue. See if you can spot the true tales.