"Babylon," in David Gray's song, refers to London, which was once known as the "modern-day Babylon."
"Crazy Train" by Ozzy Osbourne is about the Cold War concept of Mutually Assured Destruction (M.A.D.) should any nuclear missile be fired.
Jay-Z's version of "99 Problems" is a cover of a 1993 song by Ice-T with the lyrics changed to be about Jay's rise to fame.
The very American song "What Made Milwaukee Famous" was never a big hit in the US, but Rod Stewart made it famous in the UK.
The original "Enter Sandman" lyric was about crib death, with the "sandman" killing a baby.
"You Get What You Give" by The New Radicals was the first hit song to use the word "frenemies" in the lyrics.
Gramm co-wrote this gorgeous ballad and delivered an inspired vocal, but the song was the beginning of the end of his time with Foreigner.
Toto's keyboard player explains the true meaning of "Africa" and talks about working on the Thriller album.
She thinks of herself as a "song interpreter," but back in the '80s another country star convinced Emmylou to take a crack at songwriting.
The Doobies guitarist and lead singer, Tom wrote the classics "Listen To The Music," "Long Train Runnin'" and "China Grove."
Here's what happens when an opening act is really out of place with the headliner, like when Beastie Boys opened for Madonna.