Actor John Ritter, a big fan of the Beatles, told the following story during a talk show appearance.

 

A friend of his told him of that John Lennon was at a recording session in LA. Ritter arrived uninvited at the The Jim Keltner Fan Club Hour recording sessions produced by John Lennon. Ritter recalled sneaking into the control booth and recognizing Harry Nilsson and others in the room before realizing that he was standing next to John Lennon.[1]