Zayn's "Pillowtalk" reached #1 on the Hot 100, something his former One Direction bandmates never achieved.
"St. Elmo's Fire (Man In Motion)" was not written for the movie, but for Rick Hanson, a wheelchair athlete whose 1985 "Man In Motion" tour logged 24,856 miles on his wheelchair in 34 countries while raising $26 million for spinal cord research.
Before she was famous, Lady Gaga was a staff songwriter, and wrote the song "Quicksand," which Britney Spears recorded in 2008.
The Sam & Dave classic "Soul Man" was re-recorded by Sam Moore and Lou Reed for the 1986 movie Soul Man, about a white guy who pretends to be black so he can get a scholarship to Harvard.
Bruno Mars' "Just The Way You Are" was originally written with Cee-Lo Green in mind, but the Gnarls Barkley singer didn't feel it was right for him.
"Truckin'" was written as the Grateful Dead were starting their long, strange trip, settling into a life of constant touring. They rode busses and holed up in modest hotels to stay grounded.
Talking Heads drummer Chris Frantz on where the term "new wave" originated, the story of "Naive Melody," and why they never recorded another cover song after "Take Me To The River."
We've heard of artists putting their hearts into their music, but some take it literally.
The rock revolutionist on songwriting, quitting smoking, and what she thinks of Rush Limbaugh using her song.
The drummer and one of the primary songwriters in Grand Funk talks rock stardom and Todd Rundgren.
Did Al play on a Beach Boys record? Did he have beef with George Lucas and Coolio? See if you can spot weird but true stories.
Chris Stein of Blondie shares photos and stories from his book about the New York City punk scene.