Mozart KV 370b+371

I'm learning some Mozart I've never learned before, for my end-of-year exam. What's this, you say? How can a horn player get this far and not have learned all the Mozart solo repertoire there is?Well, simply put, when I started learning the horn there were fewer known fragments of the work. Even now it can be difficult to get hold of. Some recordings I have seem to mis-label the first movement as...