Skizzenbuch “Kafka” (Kafka Sketchbook) Quarta sezione – Abbozzi Frammenti e appunti musicali ( Pagine 255 – 274 )
Autograph Miscellany from circa 1786 to 1799
British Museum additional Manuscript 29801, ff 39-162. Edited by Joseph Kerman, Professor of Music, University of California at Berkley. London 1970