The Ozzy Osbourne song "Mr. Crowley" is about Aleister Crowley, a British practitioner of dark magic in the early 1900s.
Katherine Heigl played Josh Kelley's love interest in the video for his 2005 song "Only You." They met on the shoot, became a real-life couple, and got married two years later. That's good casting!
Johnny Cash's wife, June Carter, wrote "Ring Of Fire" about their relationship.
"I Won't Back Down" is a very personal song for Tom Petty. "I thought it wasn't that good because it was so naked," he said.
Dr. Luke and Max Martin originally wrote Kelly Clarkson's "Since U Been Gone" with Pink in mind but she turned it down.
The Austin Powers theme is "Soul Bossa Nova," written by Quincy Jones in 1962 - the same year the first James Bond movie was released.
The Nails lead singer Marc Campbell talks about those 44 women he sings about over a stock Casio keyboard track. He's married to one of them now - you might be surprised which.
The Scorpions and UFO guitarist is also a very prolific songwriter - he explains how he writes with his various groups, and why he was so keen to get out of Germany and into England.
On the "schizoid element" of his lyrics, and a famous line from "Everything Zen."
What happens when Kurt Cobain, Iron Maiden and Johnny Lydon are told to lip-synch? Some hilarious "performances."
An interview with Dr. John Covach, music professor at the University of Rochester whose free online courses have become wildly popular.
Go beyond The Beatles to see what you know about the British Invasion.