. . "Sonatas (Clave, 4 manos)" . . "Sonatas (Piano, 4 manos)" . . . "Sonatas or duets for two performers on one piano forte or harpsichord" . "<Klaviersonaten zu 4 Händen>" . . . . "Sonatas or Duets, for two performers on one piano forte or harpsichord Klaviersonaten zu 4 Haenden" . . . . . . . . "Sonatas or duets for two performers on one piano forte or harpsichord = Klaviersonaten zu 4 Händen" . . "Sonatas or duets for two performers on one piano forte or harpsichord Klaviersonaten zu 4 Händen" . . . "Klaviersonaten zu 4 Händen" . "Sonatas or duets : for two performers on one piano forte or harpsichord" . . "Klaviersonaten zu 4 Haenden" . . . . . "Sonatas or duets : for two performers on one piano forte or harpsichord : klaviersonaten zu 4 Händen" . "Sonatas (Harpsichord, 4 hands)" . .