Thanks for the question and @ghdprentice for the position of the instruments as heard on your system. Listening to this same tune I hear the instruments to be in similar positions. Piano left center far behind the speakers; drums on the right just to the left of my right speaker as far back in the soundstage as the piano; and the bass a little closer to the listener, slightly right of center.
This gives me more confidence in the imaging of my system.