Katy Perry says her 2008 song "Ur So Gay" is about "guys who wear the guyliner, steal your jeans, and that whole almost hipster emo scene."
Zayn's "Pillowtalk" reached #1 on the Hot 100, something his former One Direction bandmates never achieved.
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.
The guys who wrote "Take Me Out To The Ballgame" had never been to a baseball game but knew it was a good song topic.
"We're An American Band" by Grand Funk describes real events on their 1972 tour, including an encounter with a legendary groupie called "Sweet Connie."
"1979" by Smashing Pumpkins is about Billy Corgan entering adulthood. A more accurate year would be 1983, but 1979 was easier to rhyme.
Yngwie Malmsteen and Steve Vai were two of Graham's co-writers for some '80s rock classics.
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."
The head of Drake's estate shares his insights on the late folk singer's life and music.
A drummer for one of the most successful metal bands of the last decade, Chris talks about what it's like writing and performing with Slipknot. Metal-neck is a factor.
Director Mark Pellington on Pearl Jam's "Jeremy," and music videos he made for U2, Jon Bon Jovi and Imagine Dragons.
