Interesting point. I'll have to listen again to more later pieces. He definitely plays with broken, changing rhythms and the repetition of small parts of melodies (aka ostinati) in all his works. But they just don't have that raw, emotional impact from the Rite that I love so much.
Very interesting that this (unknown to me) work appears in a discourse on cubism. I would have thought cubism to have been something of a rebellion against academic work, but this portrait is apparently instead a direct descendant of it.
As you probably know, the academic method of drawing (including painting) relies on simplifying the body and head into basic and uncomplicated geometric forms, rendered with straight lines, catching all the correct angles. Once this is done, the subltleties are searched out and the figure is softened where appropriate. In any case, the above portrait is not much more than the very beginning stage of an academic portrait, only with color added. There are other techniques in the work consistent with the academic style. I am a little surprised.
I tend to like the stuff you posted, esp. the 3 musicians. As always, while I consider it to be good art, I have trouble putting it into the "great" category.