I have 2 son's 5 & 6 years old. Well my 5 year old is up and his room Saturday evening singing. I sneak up just so I could listen to what he was singing as he gets embarrased if anyone watches him. Well I get up next to his room and he is singing "Boy your gonna carry that weight, carry that weight a long time" He has my Abbey Road CD in his walkman and is just going to town singing with it. I let him be as I just sat there and listened.