Robert Plant's "Heaven Knows" is a satirical look at the '80s, when style seemed to trump substance.
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.
A problem with his eyes gave Jackson Browne the idea for "Doctor My Eyes," which became a song about a man whose mental health suffers when he sees the world for what it really is.
Britney Spears was just 16 when her first single, "Baby One More Time," was released. She quickly became a top search term on something called The Internet.
Taylor Swift's "Shake It Off" was inspired by how she'd learned to deal with all the false rumors that circulated about her. She realized she could either let it get to her or "just shake it off."
"Strawberry Letter 23" by The Brothers Johnson was written by Shuggie Otis, whose girlfriend would send him letters written on strawberry-scented paper.
In her days with The Runaways, Joan Jett saw The Arrows perform "I Love Rock And Roll," which Alan Merrill co-wrote - that story and much more from this glam rock pioneer.
Just like Darrin was replaced on Bewitched, groups have swapped out original members, hoping we wouldn't notice.
The man who created Yacht Rock with "Sailing" wrote one of his biggest hits while on acid.
The Doobies guitarist and lead singer, Tom wrote the classics "Listen To The Music," "Long Train Runnin'" and "China Grove."
Deep Purple's guitarist since 1994, Steve talks about writing songs with the band and how he puts his own spin on "Smoke On The Water."
Bowie's "activist" days of 1964 led to Ziggy Stardust.