Zachary the "schnitzel boy"

Backstory: There is a German restaurant in town that we like to go to from time to time. On the weekends they have live music and when the boys are done eating they like to dance on the tiny dance floor. We've even bought a CD of the man that usually plays there and sometimes Zachary will ask for the "schnitzel music". (schnitzel = yummy German pork dish) Twice this week Zachary has been playing with his blocks and told me that he's made an acordian and he's the schnitzel boy. He can even sing some songs.
I think you can understand most of what he's singing but if not he is singing a real song. "No beer today, no beer today. You can't buy beer on a Sunday." Of course he's singing it to me so he's saying that Mama can't buy beer on a Sunday. Silly boy!