what makes even more beautiful is just the fact that it isn't a perfect sounding piano that is being used - but it IS the RIGHT piano that is being used...something I think a lot of composers miss. You don't always need the most bomb equipment and stereo-widened to hell sounds to make something sound right. In fact - it's crippling to have all perfect sounding things.
The mix is very wet with all the reverb - but in this case - you know how to use that to your advantage whereas (again) many other composers would find themselves drowning the piece in it. It seems your instruments at least know how to "swim" so to speak.
Though it's just 2 simple chords, they turn out to be tremendously effective...but that was probably very evident from just the first time you played them. I know how that sort of stuff goes...