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.
The 311 song "Amber" is likely about Nicole Scherzinger, who was dating the band's lead singer Nick Hexum.
Madonna's hit "Like A Prayer" debuted in a Pepsi commercial, but Pepsi pulled the ad the next day when the controversial video appeared. Madonna got to keep her $5 million endorsement money.
The Blues Traveler song "Hook" is a Peter Pan reference, but also about the catchy hook of the song, which is what "brings you back."
Elton John and his lyricist Bernie Taupin got the name "Levon" from Levon Helm, who was the drummer in The Band.
"I Can See Clearly Now" by Johnny Nash was the first reggae song to hit #1 in America on the Hot 100.
When Dave recorded the first version of the song with his group the Blasters, producer Nick Lowe gave him some life-changing advice.
The Nails lead singer Marc Campbell talks about those 44 women he sings about over a stock Casio keyboard track. He's married to one of them now - you might be surprised which.
Eddie (played by Johnny Depp in the video) found fame fleeting, but Chuck Berry's made-up musician fared better.
The Celtic music maker Loreena McKennitt on finding musical inspiration, the "New Age" label, and working on the movie Tinker Bell.
Surprise exits, a catfight and some very memorable performances make our list of the most memorable Idol moments.
Many actors have attempted music, but only a few have managed a hit. Do you know which of these thespians charted?