Mozart was the first to team a piano with a string trio. The key of G minor was always magical for Wolfgang, and this three movement piece has the kind of drama that Mozart brought to the opera house.
The first movement, marked allegro in 4/4, is in sonata format, so you know what to listen for. The exposition is repeated. Development is short and moves through a variety of minor keys, concentrating on the first subject. The recap is stated strongly, and the second subject is stated in G minor rather than G Major. But the development-to-recap repeat is observed, which is a bit unusual.
The slow movement, marked andante in 3/8 and B-flat, could have come straight out of the opera house.
The rondo finale, marked allegro in 2/2 and G Major, will feature that first subject returning again and again. Its pure fun. That abrupt left turn in the coda to E-flat is a real thigh-slapper.