Order of Mass

Order of Mass is an outline of a Mass celebration, describing how and in what order liturgical texts and rituals are employed to constitute a Mass.

The expression Order of Mass is particularly tied to the Roman Rite where the sections appearing under that title in the Roman Missal also contain a set of liturgical texts that recur in most or in all Eucharistic liturgies (the so-called invariable texts, or ordinary of the Mass), while the rubrics indicate the rituals, and the insertion points of the variable texts known as the proper of the Mass. Having been virtually unchanged for many centuries, the Roman Catholic Order of Mass changed decisively after the Second Vatican Council.

Other Christian denominations have comparable descriptions of their liturgical practices for the Eucharist, which are however usually not called Order of Mass.

The Order of Mass in Western liturgy generally consists of the following sections:

The Kyrie eleison was traditionally sung in Greek, the others in Latin. Prior to the Council of Trent the Kyrie was frequently troped by adding texts particular to a specific feast day between the lines of the Kyrie; indeed English renaissance composers seem to have regarded the Sarum rite Kyrie as part of the propers and begin their mass settings with the Gloria. These tropes were essentially texts.

Until the 1970 revision of the Roman Missal, the Agnus Dei was modified for Requiem Masses, and prayed not miserere nobis (have mercy on us) and dona nobis pacem (grant us peace), but dona eis requiem (grant them rest) and dona eis requiem sempiternam (grant them eternal rest).

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