You’re in between takes, farting around in the studio, and Bonzo’s amusing himself with some of his fav drum intros.
Jimmy joins in after Bonham’s take on Little Richard’s “Keep A-Knockin” catches his ear.
Luckily, the tapes kept rolling and 15 minutes later, we have “Rock ‘n Roll.”
It’s released with Four Sticks as a 7 inch single on February 21, 1972.
Source: This is how you create a rock n’ roll classic … – You Can’t Make This Stuff Up …