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 Shout to The Lord CCHS Concert Choir, Messiah. Behold I tell you a Mystery and The Trumpet Shall Sound. Special Needs Benefit Concert, Let It Shine Sung by Covenant Christian High School Chapel Choir