June 4th 1964

Paul was on stage singing and playing bass guitar* Ringo was on drums George was lead guitarist John was vocal singer

You are watching them with all the other 1000 people all of a sudden Paul stops singing

he walks over to Ringo

Paul:"Ringo do you know uh the lyrics..?"

Paul clearly forgot the lyrics of the song "Yellow Submarine" he was sweating

Ringo:"untill we found the sea of green"

he says smiling as Paul pauses to embarrassed to start playing again