"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.
Bob Dylan's original version of "Mr. Tambourine Man," released on his album Bringing It All Back Home, has no tambourine, just guitars and harmonica.
John Lennon got the title of the Beatles song "Happiness Is A Warm Gun" from an article in a magazine published by the National Rifle Association.
When Adele needed to cry during the filming of the video for "Hello" she played Labrinth's 2014 single "Jealous." "You could play it at my kid's birthday and I'd burst into tears," she said.
Icona Pop consider "I Love It" a kiss-off to their boyfriends. "We just wanted to get the song out and get the pigs to hear it," group member Jawo said.
Adele isn't a ghost when she sings, "Hello from the other side" - it means the "other side of becoming an adult."
Their frontman (Chris Cornell) started out as their drummer, so Soundgarden takes a linear approach when it comes to songwriting. Kim explains how they do it.
The trail runs from flying saucer songs in the '50s, through Bowie, blink-182 and Katy Perry.
Johnny Depp, Angelina Jolie, Mila Kunis and John Malkovich are just a few of the film stars who have moonlighted in music videos.
A popular contemporary folk singer, Williams still remembers the sticky note that changed her life in college.
Roger reveals the songwriting formula Clive Davis told him, and if "Eight Miles High" is really about drugs.
The 10 biggest "retirement tours" that didn't take.