"Irreplaceable" wasn't specifically penned for Beyonce - in fact, Ne-Yo wrote it more as a country song and had Faith Hill and Shania Twain in mind.
Elton John's songwriting partner Bernie Taupin wrote the original lyrics for Starship's "We Built This City." It was the first Hot 100 Top 10 hit Taupin wrote without John.
Dire Straits frontman Mark Knopfler got the idea for "Money For Nothing" after overhearing delivery men in a New York department store complain about their jobs while watching MTV.
Before she was famous on Friends, Courteney Cox danced on stage with Bruce Springsteen in his "Dancing In The Dark" video.
The first time Jimmy Page, Robert Plant, John Bonham and John Paul Jones all recorded together in the studio was when they backed American singer PJ Proby on his Three Week Hero album.
Bob was the bass player and lyricist for the first two Ozzy Osbourne albums. Here's how he wrote songs like "Crazy Train" and "Mr. Crowley" with Ozzy and Randy Rhoads.
Rosanne talks about the journey that inspired her songs on her album The River & the Thread, including a stop at the Tallahatchie Bridge.
The stories behind "Shine," "December," "The World I Know" and other Collective Soul hits.
Test your metal - Priest, Maiden, and Beavis and Butt-head show up in this one.
"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."
Emilio talks about what it's like to write and perform with the Tower of Power horns, and why every struggling band should have a friend like Huey Lewis.