Today's Piano Puzzler

Our contestant this week is Nicholas Gurwitch, of Rochester, New York.  The hidden song should be extremely guessable, and the composer style will likely come down pretty clearly to two possibilities.  But why this is such a particularly interesting Puzzler to listen to is that after the resolution, pianist Bruce Adolphe goes into a very long explanation of octotonic scales and and describes in fascinating detail how this particular piece came about.