The moans of pleasure in the Guns N' Roses song "Rocket Queen" are authentic.
The Devo song "Freedom Of Choice" is about mindless consumerism - how people like to make frivolous choices, but otherwise want to be told what to do.
"Kashmir" is the only Led Zeppelin song to use outside musicians, as it needed strings and horns.
In 1939, a polka craze swept America thanks to "Beer Barrel Polka (Roll Out The Barrel)."
"Piano Man" was inspired by Billy Joel's time playing at a piano bar in Los Angeles. The "real estate novelist" was a guy who always talked about writing a book, but spent all his spare time in the bar.
Cure lead singer Robert Smith originally wrote "Lovesong" as a wedding present for his fiancée, Mary, shortly before their marriage.
One of the most popular classical vocalists in the land is lining up a trip to space, which is the inspiration for many of her songs.
With $50 and a glue stick, Bruce Pavitt created Sub Pop, a fanzine-turned-label that gave the world Nirvana and grunge. He explains how motivated individuals can shift culture.
Established as a redoubtable singer-songwriter, the Men At Work frontman explains how religion, sobriety and Jack Nicholson play into his songwriting.
"When seeds that you sow grow by the wicked moon/Be sure your sins will find you out/Your past will hunt you down and turn to tell on you."
The Creed lead singer reveals the "ego and self-fulfillment" he now sees in one of the band's biggest hits.
Go beyond The Beatles to see what you know about the British Invasion.