You might think that after a solid week of beyond-belief music in Catholic liturgy that there was nothing left to happen on Sunday of the last day of the Colloquium. Well, there was. All 250 people joined together to sing Anton Bruckner's Ave Maria. No recording can capture it. No way. But these by Corpus Christi Watershed come close.
Have a listen to the rehearsal recording. An even better version is live on Sunday at Mass.