You know these faces ?

Fathers and sons and daughters.

Paul’s dad was a piano player/entertainer and many attribute Paul’s melodic abilities are due to his early exposure to the famous melodies of his dad’s generation.

John’s father was a merchant seaman and not around much. His mom was the musical one, but he lost her when he was a teenager. His Aunt Mimi, who raised him, told him he never be able to make a living, playing guitar.

George’s dad was a “ bus conductor and a ship’s steward” wiki

Ringo’s father “left home in 1943, not long after Ringo’s third birthday.” wiki

Lots has been written - here’s a quick video.