MOZART AND THE PRACTICE OF SACRED MUSIC, 1781-91 a ...

the “etwas kleinere” mass offered on the same date. However, the Hofkapelle numbers are a
common internal feature of the archive where more than one mass by a composer was found,
and do not necessarily reflect Traeg’s own numbering scheme. Nor does the process work in
reverse: with the possible exception of K. 337, the Hofkapelle sources are not
contemporaneous with the advertisements, so the case for identifying the works Traeg
advertised on the basis of the Hofkapelle’s numbering scheme is not particularly strong.
Is it possible that one or more of the early Hofkapelle scores are Traeg copies?
Viennese Mozart-Copyist 3, the copyist of the Hofkapelle’s scores of K. 337 and K. 258, may
have worked for Traeg in the late 1790s. 253 However, VMC-3 may have also worked for
Sukowaty, 254 who operated to an undetermined degree as the ensemble’s regular copyist, at
least in name. VMC-3’s long career as a copyist for the Hofkapelle did in fact extend well
before the advent of Sukowaty and Traeg, so there may have been an agreement with the
ensemble that bypassed both firms.
Despite the uncertain origin of the Hofkapelle’s copies, it seems likely that the
ensemble acquired its first Mozart masses in the order K. 337, K. 317 and K. 258. This is
not only consistent with the forensic evidence but suggested by the Hofkapelle’s two
catalogues, one of which I have already mentioned. 255 The relationship between them is not
entirely clear: the entries for Reutter, Gassmann and Bonno list almost exactly the same
music, but the ÖNB copy was kept up-to-date for longer, and contains much of Eybler’s
later church music. The latest works in Salieri’s Handexemplar, on the other hand, are from
the first decade of the nineteenth century, and Salieri’s own church music, strangely enough,
is hardly listed. 256 Both are complex documents with annotations, corrections and additional
253 MVC, 944, 1157-59.
254 Ibid., 1161.
255 A-Wgm, 22551/33 and A-Wn, INV I/Josef II.1 (olim Mus. Hs. 2454).
256 See Pfannhauser, "Mozarts Kirchenmusikalische Studien," 14n62.
222