Today's Piano Puzzler

This week's contestants is trombonist and classical arranger Paul Hanna from Talahassee, Florida, who is joined at the end by his wife Christine, who it turns out had been listening in on an extension line.  The hidden song was fascinating -- it was one of the few times I've been able to pick out for absolute certain which hand is playing the song, and I listened closely to it, separating those notes out, and there was a familiarity to, but I just couldn't get it.  But...I eventually did.  And there's a very clever twist to what it is.  As for the composer style, I was way off, which is surprising since he's one of my favorite composers.