Today's Piano Puzzler

This week's contestant is Rebecca Butler of St. Simons Island, Georgia.  And it's one of the more interesting of the compositions they've had.  For starters, it's a really charming piece that Bruce Adolph wrote.  And the hidden popular song is extremely well-known, and the classical composer is, as well.  Yet...I didn't have a clue what it was.  I should have gotten the composer style -- one of those "slap yourself in the head, oh-yeah, of course," things -- but the closest I came wasn't close enough.  But the song was deeply hidden.  Interestingly, when you do know the song and go back to listen, it's gorgeously woven into the composer style and almost more of a pleasure to listen to.