BACH, J.S. Sonatas de Violín y Clave. Ms. de Johann Heinrich Bach (parte de Clave), y de Schwanberg (parte de Violín)Partes de Violín y Clave independientes

D B Mus. ms. Bach St 162. Violin part written by G. H. L. Schwanberg, first 49 pages of harpsichord part by Bach, Johann Heinrich (1707–1783), last 5 pages of harpsichord part by J. S. Bach. Contains early version of No.6 (BWV 1019a.)