Biamonti 400 – Theme for a fugue in a Kyrie, circa 1803.

(Page 159), mentioned by Nottebohm (page 71), without reproducing the music. It is found in the Landsberg 6 Sketchbook, the Eroica Sketchbook, on page 159, lines 13–14. Nottebohm, on page 71 of his book Ein Skizzenbuch von Beethoven aus dem Jahre 1803, simply notes: “das Thema zu einer Fuge in einem Kyrie” [the theme for a fugue in a Kyrie].

Beethoven does not write accidentals in the key signature, nor does he indicate the key itself. I therefore tried changing the clef and used the soprano clef instead of the bass clef, which I offer as an alternative.