Mariah Carey's "We Belong Together" was the best-selling song of the 2000s in the US.
The game Lana Del Rey sings about in "Video Games" is World of Warcraft - her ex used to play it all the time.
Young MC shows up in the George Clooney movie Up In The Air performing his hit "Bust A Move."
Phil Collins' "Take Me Home" is about a patient in a mental institution and was inspired by the novel One Flew Over the Cuckoo's Nest.
Miley Cyrus didn't write "Wrecking Ball" but could very much relate to it. She was having problems in her relationship with Liam Hemsworth, so the theme of giving your love only to have it wrecked really resonated with her.
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.
"Mony Mony," "Crimson and Clover," "Draggin' The Line"... the hits kept coming for Tommy James, and in a plot line fit for a movie, his record company was controlled by the mafia.
"Missing You" was a spontaneous outpouring of emotion triggered by a phone call. John tells that story and explains what MTV meant to his career.
Deep Purple's guitarist since 1994, Steve talks about writing songs with the band and how he puts his own spin on "Smoke On The Water."
Graham Nash tells the stories behind some of his famous songs and photos, and is asked about "yacht rock" for the first time.
Stone Temple Pilots bass player Robert DeLeo names the songs that have most connected with fans and tells the stories behind tracks from their Tiny Music album.
Have you got the smarts to know which of these graduation song stories are real?