6. The concertos are those in B-flat major, K 595, in C major, K 503, A major, K 488, and in E-flat major, K 449. See Alan Tyson, “The Mozart Fragments in the Mozarteum, Salzburg: A Preliminary Study of Their Chronology and Their Significance,” in Journal of the American Musicological Society 34 (1981): 471–510; reprinted in Alan Tyson, Mozart: Studies of the Autograph Scores (Cambridge, Mass., and London: Harvard University Press, 1987), 123–161 esp. 150–153.