The Easter Triduum began with the Commemoration of the Lord's Supper on Maundy Thursday. At this service, presided over by the Archbishop, the music was led by the Cathedral Choir. The Choir performed Missa Aeterna Christi munera by Palestrina, and an arrangement of Ubi caritas by Duruflé. The service concluded with the procession of the Blessed Sacrament to the Altar of Repose in St. Stephens Chapel, and the singing of Pange lingua and Tantum ergo.
The following day, at the Celebration of the Passion of the Lord (Good Friday), the music was led by the Cathedral Schola. The Schola performed an entirely a cappella service, including The Reproaches by Sanders and a stirring rendition of the well-known piece Miserere mei by Allegri.
The Cathedral Choir and Cathedral Schola came together for the joyful celebration of the Lord's resurrection at the Easter Vigil on Saturday evening. The Knud Smenge Jubilee Pipe Organ came to life (having been silent since the service on Maundy Thursday) as the combined choirs sang the Gloria from Messe à deux chœrs at deux orgues by Widor. The choirs also performed the Sanctus, Benedictus and Agnus Dei from this mass setting, as well as Widor's Surrexit a mortuis. The choirs capped off the Easter Vigil with Christ our Passover by Dirksen, and an arrangement of O filii et filiae.
At the 10am mass on Easter Sunday, the combined choirs reprised much of the music from the Easter Vigil, and at the noon mass, the Schola performed Byrd's Haec dies and Taverner's Dum transisset Sabbatum.
For your enjoyment, here is a video of the combined choirs performing Widor's Surrexit a mortuis at the 10am mass on Easter Sunday:
Surrexit a mortuis,
Christus Dei Filius,
Pastor qui animam pro gregge suo posuit.
Pascha nostrum immolatus est,
Christus, Pascha nostrum
Surrexit a mortuis.
He rose from the dead,
Christ, the Son of God,
The good shepherd,
The shepherd who, for his flock, laid down his life.
For us he was sacrificed,
The Christ, for us,
He rose from the dead.