I think I know what's happened there - notice how the trumpets that play the main melody sound like they're really distant and buried in the mix? Someone's screwed up and got the stereo version, but only got one leg. We're missing either the left or right stereo channel, and I think the piano and trumpets are both on it. It's like that on the EMI PM site too.
I think I have the true stereo version somewhere, but I can't get to it right now.