GIA4779296 The correct position of the hands on the piano keyboard. Illustration of the book ??????Methode pour le pianoforte??????by Ignaz Pleyel (1757-1831) and Dussek (1760-1812). by Unknown Artist, (19th century); Private Collection; (add.info.: The correct position of the hands on the piano keyboard. Illustration of the book ??????Methode pour le pianoforte??????by Ignaz Pleyel (1757-1831) and Dussek (1760-1812).); by Giancarlo Costa; out of copyright.