Today's Piano Puzzler

This week's contestant is Bob Lagerquist from Eugene, Oregon.  This was one of those puzzlers where I was sure I knew the hidden song, but couldn't quite get it.  And then, about halfway through I got closer...and then I got it.  I think my problem was that at first it sounded like another song, and when that happens it's hard to get the song out of your head.  As for the composer style, I couldn't get it.  Knowing the answer now, I understand it, but it's not part of the composer's style I'm most familiar with.