What would it have sounded like? Imaging attending the Easter Vigil with all those newly baptized Christians singing in their native language of Greek with St. John Chrysostom, Doctor of the Church, presiding.
Country folks walking in from the farms miles away with the smell of manure as their daily fare — coming into the splendor of this church, with the smell of incense and the heavenly music and the preaching of the Word of God and the miracle of the Eucharist.
They must have thought they’d entered heaven. The music starts at 1 minute into this YouTube video.