Glagolitic Mass

The Glagolitic Mass (Czech: Glagolská mše or Mša glagolskaja; also called Missa Glagolitica or Slavonic Mass) is a composition for soloists (soprano, contralto, tenor, bass), double chorus, organ and orchestra by Leoš Janáček. The work was completed on 15 October 1926 and premiered by the Brno Arts Society, conducted by Jaroslav Kvapil, in Brno on 5 December 1927. Janáček revised the mass the next year.

The Glagolitic alphabet was an early Slavic alphabet, the predecessor of the modern Cyrillic alphabet.

The text is in Old Church Slavonic, with five vocal movements that correspond to the Catholic Ordinary of the Mass, omitting "Dona nobis pacem" in the Agnus Dei. The musical origins of the work can be traced to Janáček's Latin setting of the Kyrie, Agnus Dei, and Credo for organ and chorus. This was used as a dictation exercise by his composition students in 1908.

Janáček had extensive experience working with choirs, as well as writing a large amount of choral music, and this work is his finest in the genre. It begins and closes with triumphant fanfares dominated by the brass. In between these sections lies particularly vibrant and rhythmic writing for solo voices as well as choir. Before the closing Intrada, Janáček introduces a dramatic organ solo of considerable originality – a perpetuo moto of wild energy. Janáček's Glagolitic Mass is considered one of the century's masterworks and is frequently performed and recorded today.

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