Biamonti 191 – Intermezzo for the Sonata in C minor Opus 10 number 1 for piano, first notebook, page 34 (Nottebohm, II, page 479) second half 1798 – 1799. Among the various other alleged interludes for the sonata in C minor Opus 10 number 1 for piano (see numbers 139, 158, 159) this is the only one that explicitly mentions its title.

It is found on page 34, lines 1-4 of the Sketchbook called Grasnick 1. Nottebohm in his book Zweite Beethoveniana reports the first 11 measures adding that: “Beethoven hatte schon früher vor, der Sonate ein Intermezzo zu geben.” [Beethoven had already thought of giving the sonata an interlude.] They are sketches written hastily and with a sometimes-minute handwriting; therefore, difficult to decipher.