7. K⁶ [=Ludwig Ritter von Köchel, Chronologisch-thematisches Verzeichnis sämtlicher Tonwerke Wolfgang Amadé Mozarts, ed. Franz Giegling, Alexander Weinmann, and Gerd Sievers (Wiesbaden: Breitkopf & Härtel, 1964)] 626a, no. 50. The authenticity of an alternative cadenza for the slow movement (K⁶ 626a, no. 51) is doubted by Eva and Paul Badura-Skoda, the editors of the Neue Ausgabe sämtlicher Werke,—Serie V, Werkgruppe 15, vol. 5 (Kassel: Bärenreiter, 1965), ix—although it was published, together with the authentic one, by both Artaria and André.