Note 28 — Chapter II

Nottebohm’s researches (cf. “Zweite Beethoveniana,” p. 416 et seq.) show that Beethoven sketched all the movements of the Triple Concerto, Op. 56, in 1804; that the beginning of the work on the “Waldstein” Sonata. Op. 53, dates back to 1803, or at the latest the early part of 1804; sketches for Op. 54 are missing, but the three numbers of Op. 57 are so fully represented among the opera sketches that Schindler’s statement that the so-called “Appassionata” Sonata was composed at Count Brunswick’s in 1806 is to be understood as referring only to its definitive working out and the making of a fair copy; the date of the performance of “Leonore” (“Fidelio”), taken in connection with a revision of the air in E major, show that the “Leonore” sketchbook, between which and the book of 1803 there seems to have been another, of which no trace has been found, may have extended to the beginning of 1805.