An unexpected guest vocal: Marianne Faithfull on the Metallica song "The Memory Remains." A star in the '60s, this collaboration helped revive her career.
Ellie Goulding's hit single "Burn" was originally demoed by Leona Lewis for her 2011 Glassheart album. She scrapped the tune when the project was retooled to include more ballads.
After the Beastie Boys sampled a bunch of Led Zeppelin songs, Robert Plant did it himself on his 1988 solo hit "Tall Cool One," which sampled "Whole Lotta Love," "Black Dog" and "The Ocean."
The Scooby Snacks in the Fun Lovin' Criminals song aren't dog treats, they're Valium pills.
Young MC shows up in the George Clooney movie Up In The Air performing his hit "Bust A Move."
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.
"I'll Be" was what Edwin called his "Hail Mary" song. He says it proves "intention of the songwriter is 180 degrees from potential interpretation by an audience."
Glen Ballard talks about co-writing and producing Alanis Morissette's Jagged Little Pill album, and his work with Dave Matthews, Aerosmith and Annie Lennox.
Wolfgang Van Halen breaks down the songs on his debut album, Mammoth WVH, and names the definitive Van Halen songs from the Sammy and Dave eras.
On "Life Is A Highway," his burgeoning solo career, and the Rascal Flatts song he most connects with.
Bowie's "activist" days of 1964 led to Ziggy Stardust.
The British reggae legend tells the story of his #1 hit "Close To You," talks about his groundbreaking Shabba Ranks collaboration "Housecall," and discusses his latest project with Robin Trower.