Today's Piano Puzzler

This week's contestant is Shawn H. from Round Rock, TX.  I actually remember hearing this one previously, so at least they're, in part, in reruns.  That made it a bit easier for me to get, I must say.  The piece is quite lovely, and the composer is gettable.  The song is well-known but impressively hidden, in large part because of a key change, though there's a gorgeous passage where the tune is most recognizable.