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."