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The Mundelein Psalter is the first complete psalter containing the approved English texts of the divine office pointed for singing chant and available for public use. It is approved for use in the dioceses of the United States of America by the United States Conference of Catholic Bishops.

From USCCB Publishing, this revision of the General Instruction of the Roman Missal (GIRM) seeks to promote more conscious, active, and full participation of the faithful in the mystery of the Eucharist. While the Missale Romanum contains the rite and prayers for Mass, the GIRM provides specific detail about each element of the Order of Mass as well as other information related to the Mass.