My mommy told me something, a little kid should know
And it's all about the devil and I've learned to hate him so
She says, he causes trouble if you let him in your room
And he'll never ever leave you if your heart is filled with gloom

So let the sun shine in, face it with a grin
Smilers never lose and frowners never win
So let the sun shine in, face it with a grin
Open up your heart and let the sun shine in

So let the sun shine in, face it with a grin
Smilers never lose and frowners never win
So let the sun shine in, face it with a grin
Open up your heart and let the sun shine in
Open up your heart and let the sun shine in