The Glagolitic Mass one of the 20th century masterpieces of sacred music has a very complex genesis and constitutes an intricate editorial challenge. This new critical edition presents two different versions of the work in two separate volumes (B/5-I BA 6862 und B/5-II BA 6863): the September 1927 version which the composer completed before the first rehearsals and subsequent premiere in Brno and the version he partly reworked for the first Prague performance in April 1928. This second version was then revised further and published after Janacek s death by Universal Edition Wien in 1930. Known as the final authorised version it has been newly edited for thispublication which is based on the engraver s copy of the score prepared by Janacek s regular copyist Václav Sedlacek. The new Barenreiter edition also contains an informative preface (Cz/Eng/Ger/Fr/Ru) as well as detailed critical commentary. The September 1927 version can be seen more as a supplement and appears without text commentary.
