So far up to 1:30
Drums and bass are fighting each other IMO
 
Guitar at 1:40ish sounds nice
 
Piano break is nice. Piano sounds to "digital" to me. 
 
Piano(?)  on the choir section is too brittle. Bass lacks definition here too. Piano rhythm here sounds nice.
 
Drums at 4:00ish are really weak.
 
Kick at 4:50 finally starts to have some uniqueness (away from the bass). That's good. Why not like this everywhere?
 
Piano lick at the outro is cool.
 
Overall crit:
 
Being a bass player, I was at time impressed with the boom of the bass bit it became tiring after a while. Since the piece has many parts I would have opted for (at least) EQ'ing the bass differently based on the section. Being that Boris is accomplished I'd like to believe that he has more than one bass and I would like to have heard he offered up multiple takes using different basses for the different sections.
 
 
OK, pay no attention to that man and his opinions. They are after all, just opinions.

Bapu, thanks for taking the time and the detailed comments.  I will be looking at these areas for correction.

Well, I am not a mixing artist so I can't tell you how to fix (if necessary) what I hear.  It started out too "bright" for me and actually continued throughout the song.  What is played is beautiful, great artists.  It just seems to cut a bit too much.  You might very well disagree and that is cool.  You are asking for help and even if one person who hears that and tells you might be helpful.  Even till the end I am hearing it.  How would you fix that?  I don't know there are many better people up here to help with that.  Remember, this is not a crit, but what I am hearing.  This is a great work by a bunch of great musicians.