From the Youtube post:
Father Loya talks to Frank Avila about Byzantine Chants. —”Byzantine Chant” The chant of the Byzantine Church is at the same time its prayer and its theology. During this season in which we celebrate the Incarnation of God in the flesh, we see how the chant of the Church expresses our participation in God’s Incarnation. Liturgy on earth is a participation of the ongoing Heavenly Liturgy.