The wind players are very probably classically-trained, and don't "Swing" really well... their playing if kind of square-bottomed
Also, the "mix" (in this case arrangement of players relative to the single (?) mic) is not terrific...
But what an odd treasure... reminds me of Darius Milhaud's works for winds...
https://www.youtube.com/watch?v=TwLcx2H ... ture=share