I Know Why (And So Do You) ((From "Sun Valley Serenade"))

Why do robins sing in December
Long before the springtime is due?
And even though it's snowing, violets are growing
I know why and so do you

Why do breezes sigh ev'ry evening?
Whispering your name as they do
And why have I the feeling stars are on my ceiling?
I know why and so do you

When you smile at me, I hear gypsy violins
When you dance with me, I'm in heaven when the music begins

I can see the sun when it's raining
Hiding ev'ry cloud from my view
And why do I see rainbows when you re in my arms?
I know why and so do you