Sussmayer, F. X. as you know was Mozart's copiest, and also a horn player. Probably the second horn player to Leitgeb when Mozart wrote the 12 Duets. Sussmayer went on to some fame as a composer of operas and operettas, and as a conductor in various opera houses. He did not write a horn concerto but did write one for clarinet and orchestra. Of interest to horn players other than his assemblage of the two concerto movements into what we know as Mozart's Concerto #1 in D, is a trio for Flute Viola and Horn. The manuscript contains the completed first two movements and sketches for the last two movements shows corrections which are obviously the instructions by Mozart. I have completed and published the work, and an incipit of it can be viewed in the Dalley Horn Catalogue - 2006 edition. Regards. Harriet & Nielsen Dalley _______________________________________________ post: horn@music.memphis.edu unsubscribe or set options at http://music2.memphis.edu/mailman/options/horn/archive%40jab.org