"Finally the 3rd movement"

As a violist I know this one like the back of my hand--it's the only wonderful melody I can think of right off the bat which is given only to the viola section (with no adulteration by celli or 2nd violins) to make the first statement.   (Aside from "Harold in Italy, in which the viola is the solo instrument, and of course therefore has a bunch of great melodies).

Who knows, maybe Pete was making unconscious kinship of one despised instrument (banjo) with another (viola). But somehow I think he just liked the tune (for good reason).