Knock! Knock! Knock!
Who's at the door?
Who's at the door?
Who's at the door?
Knock! Knock! Knock!
Who's at the door?
I wonder who it is?

I see a square head!
I see a square head!
I see lights blinking!
I see lights blinking!
I hear it beeping!
I hear it beeping!
I know who that is Who?
It's a robot!!
Come on in!

Knock! Knock! Knock!
Who's at the door?
Who's at the door?
Who's at the door?
Knock! Knock! Knock!
Who's at the door?
I wonder who it is?

I see 2 large eyes!
I see 2 large eyes!
He's big and round!
He's big and round!
He's the color green!
He's the color green!
I know who that is Who?
It's Mr. Freeze Dance!
Come on in!

Knock! Knock! Knock!
Who's at the door?
Who's at the door?
Who's at the door?
Knock! Knock! Knock!
Who's at the door?
I wonder who it is?

I see a red hat!
I see a red hat!
I see 2 black boots!
I see 2 black boots!
I see a white beard!
I see a white beard!

I know who that is Who?
It's Santa Claus! Come on in!

Knock! Knock! Knock!
Who's at the door?
Who's at the door?
Who's at the door?
Knock! Knock! Knock! W
ho's at the door?
I wonder who it is?

I see a tall hat!
I see a tall hat!
He looks really happy!
He looks really happy!
He has a plate of muffins!
He has a plate of muffins!
I know who that is Who?
It's the Muffin Man!
Come on in Muffin Man!!"