"A Voice Crying In The Wilderness," an opera in two acts, is written for baritone soloist (John) and chorus with minor singing roles for two sopranos, mezzo soprano, tenor, a major speaking role for male falsetto voice, and three lesser speaking roles for tenor voices. Members of the chorus are required to play an assortment of percussion instruments and must be able to dance in contemporary modern dance styles. The opera is scored for large string orchestra, amplified solo viola, two electronic "digital" keyboards, and a large assortment of percussion instruments. (The keyboard scores were conceived using the "CZ-1" model digital synthesizer by Casio and the "KORG DW 8000" digital synthesizer.) The opera is divided into two acts and is approximately 80 minutes in duration. Each act consists of a combination of very broad scene complexes made up of dances, recitatives, choruses, instrumental interludes, arias, and rituals. There is a short intermission between the two acts.