The moans of pleasure in the Guns N' Roses song "Rocket Queen" are authentic.
On Metallica's "The Unforgiven," James Hetfield modeled his vocals on Chris Isaak.
Bob Marley's backup singers, The I Threes, claim they are the "Three Little Birds" in his famous song.
"Coming Home" by Diddy - Dirty Money was originally iwritten for for T.I., who was getting out of prison at the time.
MTV reversed the word "joint" in Tom Petty's "You Don't Known How It Feels" so it was unintelligible, but gave the video a VMA anyway.
We were all party rocking in 2011 with the global smash "Party Rock Anthem," but rap fans know the "Everyday I'm shufflin'" line is a take on "Everyday I'm hustlin'" from the 2006 Rick Ross track "Hustlin'."
Fagen talks about how the Steely Dan songwriting strategy has changed over the years, and explains why you don't hear many covers of their songs.
The man who created Yacht Rock with "Sailing" wrote one of his biggest hits while on acid.
The in-depth discussion about the making of Jesus Christ Superstar with Ted Neeley, who played Jesus in the 1973 film.
When Judd Apatow needed under-appreciated rockers for his Knocked Up sequel, he immediately thought of Parker, who just happened to be getting his band The Rumour back together.
Did Al play on a Beach Boys record? Did he have beef with George Lucas and Coolio? See if you can spot weird but true stories.
Richie talks about the impact of "Amazed," and how his 4-year-old son inspired another Lonestar hit.