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 Opera Gala - May 2013, Have a nice day - Thessaloniki Friends of Music Children's Choir - 5 May 2010, Historia der Geburt Jesu Christi - Thessaloniki Friends of Music Children's Choir - Christmas 2010