Bob Seger's "Against The Wind" has the famous mind-bending line, "Wish I didn't know now what I didn't know then." Seger was going to cut it, but his Eagles buddies Glenn Frey and Don Henley told him it was the best line in the song.
Katy Perry co-wrote Iggy Azalea's hit single "Black Widow." Perry was originally going to sing on the track, but she couldn't fit it into her schedule, so Rita Ora provided the sung vocals instead.
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 Ricky Martin song "She Bangs" found new life when William Hung performed it so horribly on a 2004 episode of American Idol that it went viral.
A perfume called Wonderstruck was named after a line in Taylor Swift's song "Enchanted": "I'm wonderstruck, blushing all the way home."
Bruce Springsteen originally wrote "Hungry Heart" for The Ramones, but decided to keep it for himself on the advice of his producer and manager, Jon Landau.
Julian tells the stories behind his hits "Valotte" and "Too Late for Goodbyes," and fills us in on his many non-musical pursuits. Also: what MTV meant to his career.
On Glen's résumé: hit songwriter, Facebook dominator, and member of Styx.
Sheryl Crow's longtime songwriting partner/guitarist Jeff Trott reveals the stories behind many of the singer's hits, and what its like to be a producer for Leighton Meester and Max Gomez.
Doors expert Jim Cherry, author of The Doors Examined, talks about some of their defining songs and exposes some Jim Morrison myths.
With a few clues (Works at a diner, dreams of running away), can you name the character in the song?
The '70s gave us Muppets, disco and Van Halen, all which show up in this groovy quiz.