These short works are very pleasant little dittos that are fun to sight read. I learned one of the duets for fun in high school and I can confirm that they are not totally typical, generic classical sounding music (OK, some of those are Baroque). I am about to contradict my last sentence by saying that these works are useful in gigs (where patrons only want generic classical music) for when other members of your trio or quartet are taking a break and you need the music to keep going. They are not too difficult, and the reason I say they aren’t totally typical is that they are interesting for the players on top of their generally pleasing aesthetics.
Hoffmeister 3 Duets Op. 7
Hoffmeister 3 Duets Op. 65
Hoffmeister 6 Duets Op. 13
Hoffmeister 6 Duets Op. 19