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

seem to have been lost. It is possible that the lost parts were used by Mozart and Stoll for
their performance in July 1791. 209
We turn next to the Mass in C K. 317, of which Stoll apparently possessed a set of
parts from Mozart. The St. Stephen’s archive preserves a set of performing material for the
mass, but the parts clearly date from the nineteenth century. 210 An early Breitkopf and Härtel
printed score of the mass is kept together with the parts, and may be the source for them.
Although one cannot reconstruct a detailed performance history of K. 317 in Baden, the fact
that no early parts for the mass survive there may suggest that Stoll honoured Mozart’s
request of late May 1791 and did return a now-lost set of parts for the Krönungsmesse to the
composer. It is of course also possible that “authentic” parts did survive in Baden, but were
destroyed in the fire of 1812.
The Mass in C K. 337 is one of the works that Stoll possessed in autograph. The
Baden archive preserves a set of parts for K. 337, which, unlike like the parts for K. 317, are
listed in the NMA’s critical report. 211 If the NMA is to be believed, the parts date from “ca.
1790-1800,” and, more significantly, “möglicherweise handelt es sich hier um eine Abschrift,
die nach der autographen Partitur...angefertigt wurde, und die auf Mozarts Kontakte zum
Chorregenten Anton Stoll in Baden zurückgehen könnte.” 212 They are thus a potentially
significant source, and one would expect a detailed evaluation of them to determine their
usefulness for the edition. Remarkably, however, the parts receive only a cursory description,
and are not taken into account for the edition. As it happens, Holl’s dating of the parts to
the last decade of the eighteenth century is undoubtedly too early, and the evidence of the
209 The Baden archive preserves several masses by Michael Haydn, including MH 17, 154, 182, 530, 796, 826
and 837. Whether any of this material could be connected with “Süssmayr’s” request for a Haydn mass from
Schwanenstadt remains to be investigated.
210 A-Wn, Fonds 4 Baden 277. This source is not listed in the critical report of the NMA.
211 A-Wn, Fonds 4 Baden 278.
212 NMA I:I/1/4 KB, d/49. The critical report to the NMA makes no mention of Mozart’s lost parts for K. 337.
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