EN
In the creative output of Moritz Brosig (1815–1887), the F minor / F major mass was placed as opus 31. It is also the fourth of nine cycles of ordinarium missae in the mass output of the bandmaster of the Wrocław cathedral. The Requiem and the German mass complete this output. The subject of this article is a description of the composition together with a source-critical edition of the notes based on the composer’s manuscript found in the collections of the Archdiocesan Archive and the Chapter Library in Wrocław. Due to the interventions that Brosig made in the score between the first and the second edition of his mass, the original composer’s manuscript will be compared with the 19th-century printed versions, which were published by F.E.C. Leuckart. The article will also include a description of the source, which will be crowned by a revision commentary.