Scheibe wrote three Triosonate that I'm aware of. I already uploaded two of them, now I'm working on the third. The manuscript bears the date 16 march 1742. It's a bit annoying that Scheibe appaerantly wrote this piece in one day and that I need far more time than that to practice it.
It's an interesting piece. Scheibe calls it Fuge and blends the form of fugue with the (in those days) emerging sonata form. In the exposition the fugue theme is played three times, one time in each voice. The development is based on the first three bars of the fugue and visits the keys of b minor and f sharp minor. After a few dense chromatic bars the fugue theme suddenly reappears in the bass voice. The recapitulation also features the fugue theme three times. and ends with the same flourish as the exposition.
Scheibe was ahead of his time with experiments like these.