Will.I.am, literally dreamt up "I Gotta Feelin'." Said the Black Eyed Pea: "Have you ever had a dream where there's a melody in your dream? I'll wake up out of my sleep and record that! 'I Gotta Feelin' was one of those songs."
"Take On Me" was just a minor hit in Norway until a new version was released with the iconic video, making it a global smash.
The "Doctor of philosophy" in the Indigo Girls' song "Closer To Fine" is based on a teacher Emily Saliers had who had a poster of Rasputin on his door.
Shaggy wrote his swaggering hit "Boombastic" after learning what "shag" means in the UK.
Mike Campbell from Tom Petty & the Heartbreakers played the slide guitar on "Sixth Avenue Heartache." There is a connection here - Wallflowers lead singer Jakob's dad, Bob Dylan, played with Tom Petty in The Traveling Wilburys.
Bob Marley gave the songwriting credit for "No Woman No Cry" to his friend Vincent Ford, who ran a soup kitchen in Trenchtown, the area of Kingston where Marley grew up.
Tom stopped performing Thompson Twins songs in 1987, in part because of their personal nature: "Hold Me Now" came after an argument with his bandmate/girlfriend Alannah Currie.
Rock Stars - especially those in the metal realm - are often enlisted for horror movies. See if you know can match the rocker to the role.
The Def Leppard frontman talks about their "lamentable" hit he never thought of as a single, and why he's juiced by his Mott The Hoople cover band.
Rise Against frontman Tim McIlrath explains the meanings behind some of their biggest songs and names the sci-fi books that have influenced him.
With his X-wife Exene, John fronts the band X and writes their songs.
Paul Stanley on his soul music project, the Kiss songs with the biggest soul influence, and the non-make-up era of the band.