ZZ Top's "Sharp Dressed Man" was the first video that was a sequel. It picked up the storyline of their "Gimme All Your Lovin'" video about a guy who encounters three beautiful women.
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.
Ed Sheeran thought he wrote the x track "Photograph" on 6th Street in Denver, so he got a tattoo saying 6 ST. But when he returned it turned out the street was actually 6th Avenue.
Thanks to the line "shake it like a Polaroid picture," Outkast's "Hey Ya!" made Polaroid cameras cool again. Many other artists have since mentioned Polaroid in their lyrics, including Eminem, Imagine Dragons, Keith Urban, Gorillaz and Tim McGraw.
"Stop Your Sobbing" was first recorded by The Kinks in 1964. It became the Pretenders first single 15 years later, leading to a relationship between Ray Davies and Chrissie Hynde.
Billy Joel is surprised that "Piano Man" is so successful. He called it "an old, long song about a guy at a depressing piano bar."
Not everyone can be a superhero, but that hasn't stopped generations of musicians from trying to be Superman.
Bob was the bass player and lyricist for the first two Ozzy Osbourne albums. Here's how he wrote songs like "Crazy Train" and "Mr. Crowley" with Ozzy and Randy Rhoads.
The guy who brought us "Stacy's Mom" also wrote the Jane Lynch Emmy song and Stephen Colbert's Christmas songs.
The Guns N' Roses rhythm guitarist in the early '90s, Gilby talks about the band's implosion and the side projects it spawned.
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.
Rick has a surprising dark side, a strong feminine side and, in a certain TV show, a naked backside. But he still hasn't found Jessie's Girl.