Jubilate Deo was issued by the Sacred Congregation for Divine Worship as a “personal gift” of Paul VI to Catholic Bishops of the world and the heads of religious orders, on April 14, 1974.
Holy Father’s accompanying letter to the Bishops on the Minimum Repertoire of Plainchant, states the aim of promoting Latin Gregorian chant, echoing Vatican II’s Constitution on the Liturgy, promulgated by the same Pope, which had stated that, “The Church acknowledges Gregorian chant as specially suited to the Roman liturgy: therefore, other things being equal, it should be given pride of place in liturgical services.” (Sacrosanctum Concilium, 116):
This minimum repertoire of Gregorian chant has been prepared with that purpose in mind: to make it easier for Christians to achieve unity and spiritual harmony with their brothers and with the living traditions of the past. Hence it is that those who are trying to improve the quality of congregational singing cannot refuse to Gregorian chant the place which is due to it.
In presenting the Holy Father’s gift to you, may I at the same time remind you of the desire which he has often expressed that the Conciliar constitution on the liturgy be increasingly better implemented. Would you therefore, in collaboration with the competent diocesan and national agencies for the liturgy, sacred music and catechetics, decide on the best ways of teaching the faithful the Latin chants of “Jubilate Deo” and of having them sing them, and also of promoting the preservation and execution of Gregorian chant in the communities mentioned above. You will thus be performing a new service for the Church in the domain of liturgical renewal. The contents of this booklet may be reproduced free of charge…