5. The cadenzas that Bach left for his own concertos rarely touch the profundities of this one. Seventy-five cadenzas survive in a single fascicle, in the hand of the copyist Michel; they are item 264 in E. Eugene Helm, Thematic Catalogue of the Works of Carl Philipp Emanuel Bach (New Haven and London: Yale University Press, 1989). Two that come close are again for Adagios, one (H 264/39) for a Concerto in A Minor, rev. 1775 (H 424), another (H 264/42), in A minor, for an unidentified concerto. The elements of dialogue are prominent in both. I am grateful to David Schulenberg for sharing photocopies of these cadenzas.