The commemoration of all the faithful departed is celebrated by the Church on 2 November, or, if this be a Sunday or a solemnity, on 3 November. The Office of the Dead must be recited by the clergy and all the Masses are to be of Requiem, except one of the current feast, where this is of obligation.

The theological basis for the feast is the doctrine that the souls which, on departing from the body, are not perfectly cleansed from venial sins, or have not fully atoned for past transgressions, are debarred from the Beatific Vision, and that the faithful on earth can help them by prayers, almsdeeds and especially by the sacrifice of the Mass. (See PURGATORY.)

In the early days of Christianity the names of the departed brethren were entered in the diptychs. Later, in the sixth century, it was customary in Benedictine monasteries to hold a commemoration of the deceased members at Whitsuntide. In Spain there was such a day on Saturday before Sexagesima or before Pentecost, at the time of St. Isidore (d. 636). In Germany there existed (according to the testimony of Widukind, Abbot of Corvey, c. 980) a time-honoured ceremony of praying to the dead on 1 October. This was accepted and sanctified by the Church. St. Odilo of Cluny (d. 1048) ordered the commemoration of all the faithful departed to be held annually in the monasteries of his congregation. Thence it spread among the other congregations of the Benedictines and among the Carthusians.

Of the dioceses, Li?ge was the first to adopt it under Bishop Notger (d. 1008). It is then found in the martyrology of St. Protadius of Besan?on (1053-66). Bishop Otricus (1120-25) introduced it into Milan for the 15 October. In Spain, Portugal, and Latin America, priests on this day say three Masses. A similar concession for the entire world was asked of Pope Leo XIII. He would not grant the favour but ordered a special Requiem on Sunday, 30 September, 1888.

In the Greek Rite this commemoration is held on the eve of Sexagesima Sunday, or on the eve of Pentecost. The Armenians celebrate the passover of the dead on the day after Easter.

..and here is the link for our director's home page.

http://home.simoneferraresi.com/

Recover from Halloween, the Eve of All Hallows, by going to a Sung High Mass on Sunday Morning at 9:00 am at St. Anthony of Padua on Sixth Street and Brunswick. The liturgy will commemorate All Saints, and the Church Triumphant. The mixed choir of men and women will sing the Missa brevis Sancti Joannis de Deo, or Short mass by Joseph Haydn. Also known as the Little Organ Mass, it is in the Key B-flat major and was
composed in the 1770s.for the order of the Barmherzige Br?der (Brothers Hospitallers) in Eisenstadt, whose patron saint was St. John of God. Scored modestly for soprano, four-part mixed choir, two violins, organ and bass, it is known as the Kleine Orgelsolomesse (Little Organ Mass) due to an extended organ solo in the Benedictus movement. The Men's Schola will sing the Gregorian Chant propers from the Liber Usualis. Polyphonic motets and traditional hymns.

Then on Monday, pause to remember all of your beloved dead at a Solemn Requiem offered for All Souls at 5:30 PM. The moving renaissance setting of the Requiem by Cristobal de Morales will be sung by the full choir. The Requiem's peculiarities of transmission, as well as its apparent incomplete editing, suggest that it may be his last work before his death in 1553. Morales was the first Spanish composer of international renown. His works were widely distributed in Europe, and many copies made the journey to the New World. Many music writers and theorists in the hundred years after his death considered his music to be among the most perfect of the time. Listen
https://www.youtube.com/watch?v=CKKMoXFDnsY