Ariana Grande's collaboration with Zedd, "Break Free" came about after the Russian-German producer overheard Grande performing at a label showcase while he was backstage, and he mentioned to his team that he wanted to work with her.
The party tune "Mambo No 5 (A Little Bit Of)" was the theme song for the 2000 Democratic Convention (the party of Bill Clinton), until someone noticed the line, "A little bit of Monica in my life."
"Walking on a Thin Line" by Huey Lewis and the News is about an American soldier who is trained as a sniper in the Vietnam War. It was written for a documentary on the war.
Bono wrote U2's song "Sweetest Thing" for his wife to make up for working on her birthday. For the video, he staged an "apology parade," complete with Irish step dancers and an elephant.
There's a lot of Americana in "Uncle John's Band" by the Grateful Dead, including references to "Buckdancer's Choice" (an Appalachian folk song) and "Fire And Ice," a Robert Frost poem.
A problem with his eyes gave Jackson Browne the idea for "Doctor My Eyes," which became a song about a man whose mental health suffers when he sees the world for what it really is.
Jon Anderson breaks down the Yes classic "Seen All Good People" and talks about his 1000 Hands album, which features Chick Corea, Rick Derringer, Ian Anderson, and many other luminaries.
How well do you know your protest songs (including the one that went to #1)?
Don breaks down "Hotel California" and other songs he wrote as a member of the Eagles. Now we know where the "warm smell of colitas" came from.
Jim talks about the impact of "The Middle" and uses a tree metaphor to describe his songwriting philosophy.
Rob Halford, Richie Faulkner and Glenn Tipton talk twin guitar harmonies and explain how they create songs in Judas Priest.
Kiss is the subject of many outlandish rumors - some of which happen to be true. See if you can spot the fakes.