Hi, I started today the orchestration/completion of the exposition of an abandoned Beethoven draft for a a triple concerto apparently for violin, cello and piano, which predates the familiar Triple Concerto or at least a concerto for violin and Cello - this is so exiting! May I challenge you to try the same?
Here you find the available draft: https://unheardbeethoven.org/search.php?Identifier=gard3 (mp3 and midi --> "Continuity Draft and Score Fragment")
Could you develop a vision for this work ? It certainly takes some good imagination :-)