Michael Stipe hadn't finished the lyrics when R.E.M. recorded "Radio Free Europe." He calls the vocal "complete babbling."
Eddie Van Halen played the guitar solo on "Beat It" as a favor to Quincy Jones, who produced the album.
"Dirty Work" is one of the few Steely Dan songs not sung by Donald Fagen. The lead vocal is by David Palmer, who sang on two tracks from their debut album.
"Mr. Roboto" by Styx was written by their keyboard player, Dennis DeYoung, who used Japanese words and imagery to create an allegory about censorship.
Train's guitarist had to Google an instructional video to learn how to play the ukulele for "Hey Soul Sister."
Before he was the champ, Ali released an album called I Am The Greatest!, but his musical influence is best heard in the songs he inspired.
The Jayhawks' song "Big Star" has special meaning to Gary, who explains how longevity and inspiration have trumped adulation.
The good doctor shares some candid insights on recording with Phil Spector and The Black Keys.
"Dead Skunk" became a stinker for Loudon when he felt pressure to make another hit - his latest songs deal with mortality, his son Rufus, and picking up poop.
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.
Before "Rap" was a form of music, it was something guys did to pick up girls in nightclubs. Donnie talks about "The Rapper" and reveals the identity of Leah.