
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.

"Coming Home" by Diddy - Dirty Money was written for for T.I., who was getting out of prison at the time.

Prince released "The Most Beautiful Girl In The World" on his own label to prove he could generate a hit song whenever he wanted. He made his point: It was a big hit around the world.

"Mr. Roboto" by Styx was written by their keyboard player, Dennis DeYoung, who used Japanese words and imagery to create an allegory about censorship.

"The Battle of Evermore" is the only song Zeppelin ever recorded with a guest vocalist. It features Sandy Denny from Fairport Convention duetting with Robert Plant.

Prince kept doves at his Paisley Park mansion. And yes, sometimes they did cry.
Justin wrote the classic "Nights In White Satin," but his fondest musical memories are from a different decade.
Untangling the events that led to the "Stairway To Heaven" lawsuit.
Was Justin the first to be Punk'd by Ashton Kutcher? Did Britney really blame him for her meltdown? Did his bandmates think he was gay?
On Glen's résumé: hit songwriter, Facebook dominator, and member of Styx.
One of the most successful songwriters in the business, Desmond co-wrote "Livin' La Vida Loca," "Dude (Looks Like A Lady)" and "Livin' On A Prayer."