Luther also adapted the music of existing plainsong melodies as hymn tunes. The psalms and canticles may also be sung as plainsong. Monophonic chant, also called plainsong or Gregorian chant, was the dominant form until about 1100. Also, the Advent Prose, an antiphonal plainsong, may be sung. It was Neale's music editor, Thomas Helmore, who paired this hymn with the Latin plainsong. The melody is Benedictine plainsong from the 13th century. They range from plainsong chant, to Gospel, to Latin-style music. The hymnal also includes many plainsong melodies (in both plainsong and modernised notation). Among their publications are the "Monastic Diurnal" and "St. Dunstan's Plainsong Psalter". Normally it is all sung to plainsong. "Eventide", a sequel to "Plainsong", was published in 2004. Read more about the use of modes in plainsong here. The full cast then recess to the same plainsong with which the work began. The Wandering Jew encounters a returned Christ in Deborah Grabien's 1990 novel "Plainsong". The three had worked together in the group Plainsong in 1999.