Can anyone ID this tune stuck in my head?

I was pretty sure it came from one of the Peanuts movies but Google has failed me. Here is my best approximation:

“At the beach! At the Beach! Bah dah duh DAHDAH duh dah DAH duh duh”

It sounds like a group of singers in my head, female or a mix of both sexes.

I know this is almost nothing to go on but does it ring any bells? Thanks.

At your reach
At the beach
Is a larky, sparkly wonderland!
All the joys
And the noise
Is a music made by a wonder band!

By the Sherman Brothers in “Snoopy Come Home.”

I guess if you’re going to have the tune stuck in your head, you might as well have the words, too.

And it’s all at your reach at the balmy and breezy-ful, taking-life-easy-ful beach!

That’s it! Thanks! And so quickly!

And thank YOU for the lovely earworm that I’m going to be dealing with in church today!

:smiley: