I thought I had this settled in my mind that the Presto movement in Mozart's Divertimento in D is a Rondo. But the form of the movement is this:
[: A :][: BA :]
A - Homophonic texture(melody and bass), presents motives that will be used later on
B - Contrapuntal treatment of motives from section A
Now, this sounds a lot like your typical ternary form. On paper at least, it looks as though Mozart wrote a Scherzo as the Presto movement of his Divertimento in D.
Ternary Form Perspective
In fact, the large scale form of this Beethoven Scherzo:
Is the same as the form of the Presto from Mozart's Divertimento in D, except without the repeats. This makes me think that maybe it is in Ternary form.
On the other hand, you have those repeats. The repeats being first just the A section and then the B and A sections together is most commonly seen in standalone minuets, which are either in Ternary form or Rounded Binary form. However, the tempo makes it clear that this is not a minuet by any means. Presto is just too fast to consider a piece a minuet. Even Allegro is getting up there towards the borderline between a Scherzo and a minuet.
Also the time signature is much more typical of a Scherzo or a Rondo than a minuet, being 2/4 instead of the typical 3/4 or 3/8 for a minuet. A standalone Scherzo and a Scherzo as part of a larger multi-movement work, both generally have a large scale Ternary form without repeats and a smaller scale Ternary form with repeats.
There is no large scale form to this Presto. Get any more detailed than the main theme and the contrapuntal treatment and you get into phrase structures, not subsections, like you generally would with a Scherzo.
Now, on the other hand, what if it is just a short Rondo that happens to resemble Ternary Form? For centuries, the form of ABA has been called, in German, Kleine Rondo, which means little Rondo. This is what I thought at first. Even the repeats fit well into being in Rondo form. The first large section of Rondo Alla Turka(the section before the first key signature change in the Rondo) follows exactly the repeat pattern of the Presto, [: A :][: BA :]
However, there is one thing about this Presto that I'm pretty sure is not typical of any Rondo, regardless of length or complexity, that being the similarities between the A and B sections. The B section develops in a contrapuntal manner, the motives presented in the A section. This, I'm pretty sure is atypical for rondos.
The A section of the Presto, you could argue that it has a B subsection, but I prefer to think of it as closing material, because, given the tempo and how that part of the piece functions, it functions exactly the same way as the closing material in Sonata form, but without the transition and second theme that make it Sonata form. And as I have mentioned before, the B section is acting like a development section, again typical of either the more complex rondos or of Sonata form.
So is this Presto from Mozart's Divertimento in D in Ternary form? Or is it a little Rondo, not as complex as most rondos in Mozart's works?