Paul Klee Notebooks Vol 1 The Thinking Eye Adagio BWV1019, Paul Klee, between 1921 and 1922

Beginning of the fold-out showing paul klee's graphical representation of the opening bars of the adagio from the sixth sonata for violin and obbligato harpsichord, bwv 1019/4, by johann sebastian bach. Extract from klee's 1921-1922 bauhaus lectures "the thinking eye" published in his pedagogical notebooks. Date: between 1921 and 1922.