"Crazy Kids'" lyrics were inspired by a birthday party of Ke$ha's, which she described as, "one crazy night."
"The Best" by Tina Turner was originally recorded by Bonnie Tyler; Turner's hit version added a bridge and a saxophone solo by Edgar Winter.
"Zombie" by The Cranberries is about an IRA bombing in England that killed two children.
The Texas songwriter Jerry Jeff Walker wrote "Mr. Bojangles" after a weekend in jail where a fellow inmate told him his life story.
"What A Wonderful World," released in 1967 four years before Louis Armstrong died, didn't find an audience in America until 1988 when it was used in the movie Good Morning, Vietnam.
Wang Chung's '80s classic "Dance Hall Days" is about how things can start simple but end up complex. First you "take your baby by the hand," but by the end she has an amethyst in her mouth.
Roger tells the stories behind some of his biggest hits, including "Give a Little Bit," "Take the Long Way Home" and "The Logical Song."
The man who brought us "Red Skies" and "Saved By Zero" is now an organic farmer in France.
The men of Sparks on their album Hippopotamus, and how Morrissey handled it when they suggested he lighten up.
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.
Iron Maiden, Adele, Toto, Eminem and Earth, Wind & Fire are just some of the artists with songs directly inspired by movies - and not always good ones.
The guitarist/songwriter explains how he came up with his signature sound, and deconstructs some classic Fear Factory songs.