videos in AudioSet
A list of about a million ten-second YouTube clips, each labelled with the sounds in it, that Google published in 2017. Labs use it to train and test general audio and music models.
Including Hear my prayer, O Lord (Psalm: Anglican chant) - Guildford Cathedral Choir (Barry Rose), O leave your sheep (arr. Kenneth Leighton) - Guildford Cathedral Choir (Barry Rose)