
Katy Perry's song "E.T." came from a beat originally intended for the rap group Three Six Mafia. When her producer accidentally pulled up the beat, Perry asked to use it.

"Losing My Religion" by R.E.M. isn't about religion, but unrequited love. The title is based on a Southern expression meaning "at my wit's end."

The Foo Fighters song "Everlong" isn't about Kurt Cobain, but Dave Grohl's girlfriend at the time, Veruca Salt frontwoman Louise Post.

Lucinda Williams wrote and recorded "Passionate Kisses" four years before it was a hit for Mary Chapin Carpenter.

"Sunday Girl" was written by Blondie guitarist Chris Stein to cheer up Debbie Harry after her cat had run away whilst they were away on tour. The gray cat was called Sunday Man.

Fleetwood Mac's "Gypsy" is about Stevie Nicks' best friend, who died of leukemia.
One of the first successful female singer-songwriters, Janis had her first hit in 1967 at age 15.
Bradley Cooper, Michael J. Fox, Rami Malek, Reese Witherspoon, Gwyneth Paltrow and George Clooney: Which actors really sang in their movies?
It wasn't her biggest hit as a songwriter (that would be "Bette Davis Eyes"), but "Put a Little Love in Your Heart" had a family connection for Jackie.
P.F. was a teenager writing hits and playing on tracks for Jan & Dean when he wrote a #1 hit that got him blackballed.
The rock revolutionist on songwriting, quitting smoking, and what she thinks of Rush Limbaugh using her song.