A Little Rhyme - The Beatles

Now, for the final number, John’s got a card in his hand with a little rhyme on it. What is it?
It’s from the form up a third at Hemel Hempstead.
Oh!
It says, “Dear George, John, Ringo, Paul, here’s hoping that you’ll please us all. A beauty song and swinging voice, we leave it up to you, the choice. We think you’re fab and really cool, so brighten up our lads at school.” Dig this, for here’s Paul, whistling “Clarabella”.

Photo credits: Wikipedia

Lyrics added by Isabelle P.