Una Voce is an international lay organization of Roman Catholics faithful to the Magisterium of the Catholic Church and obedient to the authority of Benedict XVI. We are dedicated to maintaining the Roman liturgy codified by Pope St. Pius V, known as the Tridentine or Latin Mass, as one of the universally recognized and honored forms of Eucharistic celebration. Una Voce also promotes Latin, the official Church language, and Gregorian chant, the official Church music.