Constitution on the Sacred Liturgy (Sacrosanctum Concilium)
Sacrosanctum Concilium, the Constitution on the Sacred Liturgy, is one of the constitutions of the Second Vatican Council. It was approved by the assembled bishops by a vote of 2,147 to 4 and promulgated by Pope Paul VI on December 4, 1963.
Sing to the Lord: Music in Divine Worship, a revision of Music in Catholic Worship, was developed by the Committee on Divine Worship of the United States Conference of Catholic Bishops (USCCB). On November 14, 2007, the Latin Church members of the USCCB approved these guidelines. These guidelines are designed to provide direction to those preparing for the celebration of the Sacred Liturgy according to the current liturgical books (in the ordinary form of celebration).
Liturgiam Authenticam (2001)
Liturgiam Authenticam is an instruction of the Holy See, dated March 28, 2001, that included the requirement that, in translations of the liturgical texts from the official Latin originals, "the original text, insofar as possible, must be translated integrally and in the most exact manner, without omissions or additions in terms of their content, and without paraphrases or glosses. Any adaptation to the characteristics or the nature of the various vernacular languages is to be sober and discreet."
This is in contrast with the principle of dynamic equivalence promoted in translations after Vatican II.
Musicam Sacram (1967)
Musicam Sacram is the title of an instruction on Sacred Music issued by the Sacred Congregation for Divine Worship on March 5, 1967, in conjunction with the Second Vatican Council. The instruction deals with the form and nature of worship music within the framework of Sacrosanctum Concilium.
The Holy Father's "chirograph", written on the 100th anniversary of Pope Pius X document on Sacred Music (Tra le sollecitudini) intends to promote the authentic renewal of sacred music in order to assure its dignity, authenticity, and appropriateness for Catholic worship. Dated November 22, 2003.
Adoremus - Church Documents
Adoremus Society for the Renewal of the Sacred Liturgy lists a large selection of documents that are particularly relevant to the Liturgy, given in reverse chronological order, the most recent appearing first. There are three categories of documents: papal, Vatican, (includes Vatican II's Constitution on the Liturgy) and US Bishops.