Duetto buffo di due Gatti is a student favorite.
We were able to get resources necessary to perform it.

Here's a link to the best VOCALLY correct version that I have seen on YouTube.

Here's a link to the FULL version.
The vocally correct version cuts out the 2nd section.

We may "ham it up" a bit. Check out THIS version.

Below are files for the pdf of the music and the accompaniment.