Goa, Sept. 20 -- Low Mass is the simplest form, celebrated without chant from the priest. While music may be included, it remains separate from the liturgy itself. Choirs cannot sing the Propers or the Ordinary (Kyrie, Gloria, Credo, Sanctus, Agnus Dei), which are reserved for High Mass. Instead, hymns, motets, or organ pieces, vernacular or Gregorian may be used. At the altar, only two candles are lit, and no incense is allowed. Typically, two altar servers assist (with an optional Master of Ceremonies).

High Mass (Missa Cantata) elevates the liturgy with chant. The celebrant chants the Collects, readings, Preface, and Postcommunion, while the choir sings the Propers and Ordinary in Latin. Four or six candles are lit, and additional ser...