Johann Sebastian Bach (1685-1750): Das Wohltemperierte Clavier, book 2.

‘Praelude et Fugue 1’; ‘Fuga à 3’ (Prelude and fugue in C major, BWV 870). Autograph.

‘Praeludium 2’ and ‘Fuga 2’ (Prelude and fugue in C minor, BWV 871). In the hand of Anna Magdalena Bach.

Πηγή:http://www.bl.uk/catalogues/illuminatedmanuscripts/welcome.htm