Liturgy of St. John Chrysostom, Op. 31 is a choral composition by Sergei Rachmaninoff, completed in 1910. Musically it is a liturgical setting for unaccompanied choir that draws on Russian Orthodox chant and late-Romantic harmonies, featuring dense choral textures and modal-inflected melodies, and it sits within Rachmaninoff's early sacred music output, reflecting links between his art-song style and his later large-scale works.
