In several passages the interpretation is bound up with that of Mizraim, and depends in general upon the question whether Ethiopia at a given time enjoyed the prominence given to it.
8 and many other passages, is supposed to signify the cypress.
He should therefore in all such passages play extremely lightly, so as to give the violin and 'cello the function of drawing the main outline.
But, when we look at the many passages in which the violas double the basses, we shall do well to consider whether there is room in the harmonic scheme for the violas to do anything else, and whether the effect would not be thin without them.
Mozart imports from church music 3 trombones for special passages in his operas.