Have you heard of the Beatles? They were a Bristish rock group formed in 1960
They are only my favorite band!
That's cool. I never got into the Beatlemania myself, but I can appreciate the inpact they had on pop music and the counterculture movement of the 60s
Didn't Paul McCartney play int that band.
He did! He was the bass guitar player and sang. He is considered very influntial on pop music. 
O I thought He was the singer?
He is! But he also played the bass guitar which is played pretty much like a guitar. 
That is really cool, the Beatles are awesome