Stick Time: Ensemble Balance

How many of us have programmed a work with instrumental forces only to discover that the choir was being buried alive by the wall of sound produced by the orchestra?  In today’s Stick Time we have a chance to listen to a work with good balance between the instruments and the choir.  Further, it appears to me that there is no over-singing on the part of the choir, nor is the instrumental component being throttled.  (As a side-bar, note that the conductor is conducting phrase and flow, NOT pulsing beats.)