As mentioned in the opening post:
The Mollicone one-act opera is a very versatile thing,
and can be taken on the road -- and has been done that way.
Scored for soprano, tenor, and bass-baritone,
the plot has two men fighting over one woman;
there is a gun, and the soprano is shot and killed.
AND there is a painted face on the floor.

I've never had to learn this opera
but I know some musicians/singers who have done it.