revealed to have been simplified in meter and orchestration. Some of the movements are reworkings of Janáček's earlier compositions: the Svet, for instance, is derived from the Sanctus of the composer's own Mass in E-flat. Orchestration The mass is scored for soprano, alto, tenor, and bass soloists, double SATB choir, and an orchestra of 4 flutes (2–4 doubling piccolos), 2 oboes, cor anglais, 3 clarinets (3rd doubling bass clarinet), 3 bassoons (3rd doubling contrabassoon), 4 horns, 4 trumpets, 3 trombones, tuba, timpani, glockenspiel, triangle, snare drum, cymbals, tam-tam, chimes, 2 harps, celesta, organ, and strings (1st & 2nd violins, violas, cellos, and double basses). Recordings Břetislav Bakala conducting the Brno Radio Symphony Orchestra (rec. 1951, Supraphon) Leonard Bernstein conducting the New York Philharmonic (rec. 1963, Sony) Karel Ančerl conducting the Czech Philharmonic, (rec. April 1963, Supraphon) Rafael Kubelík conducting the Bavarian Radio Symphony Orchestra (rec. 1964, Deutsche Grammophon) Rudolf Kempe conducting the Royal Philharmonic Orchestra (rec. May 1973 organ solo 6 August 1973, Decca) Václav Neumann conducting the Czech Philharmonic, (rec. 1978, Supraphon) František Jílek conducting the Brno State Philharmonic Orchestra (rec. 1979, Supraphon) Sir Simon Rattle conducting the City of Birmingham Symphony Orchestra (rec. 1981, EMI Classics) Sir Charles Mackerras conducting the Czech Philharmonic (rec. 1984, Supraphon) Michael Gielen conducting the SWR Symphony Orchestra (rec. 1988, Intercord) Robert Shaw conducting the Atlanta Symphony Orchestra and Chorus (rec. 1990, Telarc) Michael Tilson Thomas conducting the London Symphony Orchestra (rec. 1990, Sony) Kurt Masur conducting the Gewandhausorchester Leipzig (rec. 1991, Philips) Charles Dutoit conducting the Montreal Symphony Orchestra (rec. May 16, 1991 Decca) Sir Charles Mackerras conducting the Danish National Radio Symphony Orchestra; (this version is based on Janáček's original manuscripts) (rec. 1993, Chandos) Riccardo Chailly conducting the Vienna Philharmonic Orchestra with the choir of the Slovak Philharmonic (rec. June 8–9, 1997, Decca) Ladislav Slovák conducting the Slovak Philharmonic; date of recording unclear, released by Music deLux Sir Andrew Davis conducting the BBC Symphony Orchestra and Chorus (rec. live 2000 at BBC Proms) Antoni Wit conducting the Warsaw National Philharmonic Orchestra (rec. 2010, Naxos) Marek Janowski conducting the Berlin Radio Symphony Orchestra (rec. 2012, PentaTone) Tomáš Netopil conducting the Prague Radio Symphony Orchestra and Prague Philharmonic Choir (rec. 2013) (Based on original performance version) Edward Gardner conducting the Bergen Philharmonic Orchestra (rec. 2015, Chandos) The "Postludium" has been recorded as a stand-alone organ piece by a number of concert organists. Arrangements