"Airplanes" by B.o.B was written by Lupe Fiasco, who recorded it but decided to pass.
"Mother" by Danzig is about censorship, specifically the Parents Music Resource Center, which pushed record labels to put warning stickers on albums with explicit lyrics.
"Love Is A Battlefield" was written as a ballad, but Pat Benatar's guitarist/husband turned it into an uptempo song.
The lyrics for "Mary, Did You Know?" were written by Christian singer and comedian Mark Lowry, after his pastor asked him to write a Christmas musical for their church. Southern gospel musician Buddy Greene later added music to his words.
Paul McCartney wrote "Hey Jude" to comfort John Lennon's 5-year-old son Julian, whose parents were getting a divorce.
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.
The Reverend rants on psychobilly and the egghead academics he bashes in one of his more popular songs.
How Bing Crosby, Les Paul, a US Army Signal Corps Officer, and the Nazis helped shape rock and Roll.
The "Midnight At The Oasis" singer is an Old Time gal. She talks about her jug band beginnings and shares a Dylan story.
The flautist frontman talks about touring with Led Zeppelin, his contribution to "Hotel California", and how he may have done the first MTV Unplugged.