Bradley Cooper, Michael J. Fox, Rami Malek, Reese Witherspoon, Gwyneth Paltrow and George Clooney: Which actors really sang in their movies?
Here's what happens when an opening act is really out of place with the headliner, like when Beastie Boys opened for Madonna.
A Soul Train dancer takes us through a day on the show, and explains what you had to do to get camera time.
Do you know who wrote Patti Smith's biggest hit? How about the Grease theme song? See if you can match the song to the writer.
Kristian talks songwriting technique, like how the chorus should redefine the story, and how to write a song backwards.
The writer of "Rainy Night in Georgia" and "Polk Salad Annie" explains how he cooks up his Louisiana swamp rock.
Sia Furler originally sent "Pretty Hurts" to Katy Perry, but she didn't see the email, so Beyonce ended up recording it instead.
The songs on Lady Gaga's The Fame Monster album represent a "fear" of some "monster." "Alejandro" is her "fear of sex" monster.
The title of the Metallica song "Ride The Lightning" came from a line in the Stephen King book The Stand where a guy is about to be executed.
ABBA's Bjorn Ulvaeus and Benny Andersson conceived "Dancing Queen" as a dance song with the working title "Boogaloo," drawing inspiration from the 1974 George McCrae disco hit "Rock Your Baby." Their manager Stig Anderson came up with the title "Dancing Queen."
Vegetarian Fred Schneider of the B-52's got the idea for "Rock Lobster" at an Atlanta disco when a projector displayed images of lobsters on a grill.
Bruno Mars' "Just The Way You Are" was originally written with Cee-Lo Green in mind, but the Gnarls Barkley singer didn't feel it was right for him.