3 Part Fugue in D minor, Hess 237 nr.4 (edited by Seyfried) (mp3)
Composed by Beethoven about 1794-95, based on theme nr.24 from Albrechtsberger´s list, the current version of this fugue was published in Seyfried´s ´Beethovens Studien im Generalbass´, p.175. Here scored for trombone, french horn and oboe.
Ignaz Xaver, Ritter von Seyfried (1776-1841) had been, like Beethoven, a pupil of Albrechtsberger. After Beethoven's death he published a rather garbled and inaccurate account of Beethoven's studies in theory (Beethovens Studien im Generalbass, 1832) which however includes counterpoint exercises and fugues by Beethoven, not published anywhere else. Unfortunately, Seyfried had no qualms in ´improving´ upon Beethoven, therefore he should be considered a highly unreliable source. Rediscovering and/or reconstructing what Beethoven actually wrote for this fugue is work still to be done.