The Mass Missaa form of sacred musical compositionis a choral composition that sets the invariable portions of the Eucharistic liturgy principally that of the Catholic Churchthe Anglican Communionand Lutheranism to music. Most Masses are settings of the liturgy in Latin, the liturgical sacred language of the Catholic Church's Roman liturgy, but there are a significant number written in the languages of music of mass
countries where vernacular worship has long been the norm. Musical Masses take their name from the Catholic liturgy called "the Mass" as well. Masses can be a cappella music of mass,
that is, without an independent accompanimentor they can be accompanied by instrumental obbligatos up to and including a full orchestra. Many Masses, especially later ones, were never intended to be performed during the celebration of an actual mass. A distinction is made between music of mass
that recur for every mass celebration ordinariumordinary music of mass,
and texts that are sung depending on the occasion propriumproper. A Missa tota "full Mass" consists of a musical setting of the five sections of the ordinarium as listed below.