"Lean On" was originally sent by Major Lazer to both Rihanna and Nicki Minaj's camps as a slower reggae track. After both parties rejected the tune, Major Lazer recruited Danish singer MØ to supply vocals and recorded it themselves.
Elton John's "Rocket Man" is based on a Ray Bradbury story called The Rocket Man published in 1951.
Mariah Carey's song "The Roof" is about her first kiss with Yankees shortstop Derek Jeter.
Jay-Z did the rap on Beyoncé's "Crazy In Love" at the last minute. They had just started dating; she asked him to feature on the track the night before she had to turn in her album.
Sweet's hit "Ballroom Blitz" was inspired by an incident in 1973 when the band were performing in Scotland and driven offstage by a barrage of bottles.
We've heard of artists putting their hearts into their music, but some take it literally.
At 80 years old, Yoko has 10 #1 Dance hits. She discusses some of her songs and explains what inspired John Lennon's return to music in 1980.
How well do you know this shock-rock harbinger who's been publicly executed hundreds of times?
A founding member of the band War, Harold gives a first-person account of one of the most important periods in music history.
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.
Ian talks about his 3 or 4 blatant attempts to write a pop song, and also the ones he most connected with, including "Locomotive Breath."
