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 Mary's Lullaby - John Rutter - Holmchase Choir 2009_0001.wmv, The Seal Lullaby - SSA - Eric Whitacre - Holmchase Singers Jersey C.I. Piano - Paul Matthews