39. The sonata was evidently alive in Bach’s portfolio during these years, for this was the sonata that Reichardt claimed Bach to have played for him during his visit to the composer in July 1774; see Reichardt, Briefe eines aufmerksamen Reisenden die Musik betreffend, II: 10–13. Reichardt further claimed that Bach gave him the sonata “in seiner Handschrift für mich allein,” but it is not likely that Bach will have parted with the autograph of a sonata not yet published. For more on the sonata, see chapter 1.