Mommy told me something
little kid should know.
It's all about the devil
And I've learned to hate him so.
She said he causes trouble
When you let him in the room.
He will 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 le the sun shine in
Face it with a grin
Open up your heart and let the sun shine in.

When you are unhappy,
The devil wears a grin
But oh, he starts [bad word] 
When the [bad word] pouring in
I know he'll be unhappy
'Cause I'll never wear a frown
Maybe if we keep on smiling
He'll get tired of hanging 'round.

If I forget to say my prayers
The devil wears a grin.
But he feels so awful awful
When he sees me on my knees
So if you're full of trouble
And you never seem to win,
Just 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 le the sun shine in
Face it with a grin
Open up your heart and let the sun shine in.