When You Grow Up What Will You Be? When you grow up what will you be There's so many jobs just look and see Maybe we'll be train engineers when we grow up An engineer drives a train Through the wind and snow and rain Let's all drive the train Blow the whistle and say 'choo choo choo choo' Maybe we'll be clowns when we grow up A clown can dance and wiggle Make you laugh and smile and giggle Let's all do a silly dance Do a silly dance and wiggle wiggle wiggle Maybe we'll be musicians when we grow up A musician plays in a band Spreading music all across the land Let's all play in a band Banging drums and say 'poo poo poo poo' When you grow up what will you be There's so many jobs just look and see