With his song "The G.O.A.T.," as in Greatest Of All Time, LL Cool J popularized that saying in hip-hop. He credits the boxer Muhammad Ali, who called himself "The Greatest," as inspiration.
The guys from Chic wrote "Le Freak" as a message to a doorman who wouldn't let them into a club. Originally, it was "F--- Off."
Paul Stanley and Gene Simmons of Kiss wrote "Rock And Roll All Nite" as a "rallying cry for all of our fans." In later years, members of Kiss wrote songs separately.
Bob Dylan was little known when he released "Blowin' In The Wind" so the cover versions - especially by Peter, Paul and Mary and Stan Getz - were much more popular at the time.
Sir Mix-A-Lot says he's earned over $100 million from "Baby Got Back." He wrote the song and owns the publishing rights, so he can authorize its use in movies, TV shows and commercials, which he often does.
Sia planned to quit her solo career after her 2014 album 1000 Forms of Fear, but the "Chandelier" video proved so popular it drew her back in.
He's a singer and an actor, but as a songwriter Paul helped make Kermit a cultured frog, turned a bank commercial into a huge hit and made love both "exciting and new" and "soft as an easy chair."
Shears does very little promotion, which has kept him secluded from the spotlight. What changed when Cyndi Lauper had a hit with his song? Not much, really.
"25 or 6 to 4" to "Semi-Charmed Life" - see if you can spot the songs that are really about drugs.
Collaborating with T Bone Burnett, Leslie Phillips changed her name and left her Christian label behind - Robert Plant, who recorded one of her songs on Raising Sand, is a fan.
When a waitress wouldn't take him home, Jack wrote what would become one of the Eagles most enduring hits.
