for SATB and brass ensemble or full orchestra Gloria was written in 1974 in response to a commission from The Voices of Mel Olson, a choir based in the USA. The division of the work into three movements â respectively proclamatory, prayerful, and joyfully affirmative â corresponds to the divisions in the text. Most of the melodic material derives from a Gregorian chant associated with this text. An accompaniment for orchestra without organ is also available. Full scores, vocal scores, and instrumental parts are available on hire. The first movement of Gloria is available separately under the title Gloria 1.