Was a Beatles song a TV theme? And who came up with those Fresh Prince and Sopranos songs?
The trail runs from flying saucer songs in the '50s, through Bowie, blink-182 and Katy Perry.
The Guns N' Roses rhythm guitarist in the early '90s, Gilby talks about the band's implosion and the side projects it spawned.
JJ talks about The Stranglers' signature sound - keyboard and bass - which isn't your typical strain of punk rock.
The Sevendust frontman talks about the group's songwriting process, and how trips to the Murder Bar helped forge their latest album.
The Doobies guitarist and lead singer, Tom wrote the classics "Listen To The Music," "Long Train Runnin'" and "China Grove."
"Midnight Train To Georgia" was originally "Midnight Plane To Houston," but was changed to sound more R&B.
Jerry Cantrell used a talkbox to create the warbling vocal effect on the Alice in Chains song "Man In The Box."
Taio Cruz throws his hands up "sometimes" in "Dynamite" because the song was originally written about surrender.
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.
"Free Fallin'" by Tom Petty is set in Los Angeles, as he mentions Reseda, Mulholland and Ventura Boulevard.
"Never Tear Us Apart" was a live favorite for INXS, who would often extend the second pause for a while as the crowd went crazy.