Did you know that around 1815 Beethoven was working on a last Piano Trio in f-minor? We know an almost complete introduction and an almost complete main melody line of the Allegro exposition. About 20 years ago W.Holsbergen made an outstanding job to complete this to an awesome first movement. Here it is:
https://unheardbeethoven.org/mp3s/biam637gp.mp3
https://unheardbeethoven.org/docs/biam637AWH.pdf
I hope you will enjoy this as much as I do ...
Gerd