Ernst Röhm: executed by Hitler after the Night of the Long Knives, the inspiration for this thoughtful Al Stewart track.
"On The Floor" by Jennifer Lopez samples the 1989 song "Lambada," which you might remember is about "The Forbidden Dance."
Whitesnake's "Here I Go Again" is a very inspiring song, but it's really about heartbreak: David Coverdale wrote it when his first marriage was falling apart.
"The Long and Winding Road" became The Beatles' last US #1 song on June 13, 1970.
Phil Collins' "Take Me Home" is about a patient in a mental institution and was inspired by the novel One Flew Over the Cuckoo's Nest.
"Cigarettes And Chocolate Milk" describes a time in Rufus Wainwright's life when he found himself hungover and pounding chocolate milk to feel better. It didn't work, so he smoked a cigarette, which is when he realized his addictive personality could be a problem.
Before recording "Boom Clap" herself, Charli XCX offered the song to Hilary Duff, but her people turned down the tune because it "wasn't cool enough for Hilary."
Famous songs that lent their titles - and in some cases storylines - to movies.
Shows like Dawson's Creek, Grey's Anatomy and Buffy the Vampire Slayer changed the way songs were heard on TV, and produced some hits in the process.
With a few clues (Works at a diner, dreams of running away), can you name the character in the song?
On Glen's résumé: hit songwriter, Facebook dominator, and member of Styx.
How a gym teacher, a janitor, and a junkie became part of some very famous band names.
Have you got the smarts to know which of these graduation song stories are real?