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 Gustav Holst, 'Jesu sweet' (from '4 Songs for voice and violin', op. 35), Ottorino Respighi,' Berceuse' (‘Sei Pezzi’ for violin and piano), Jean Sibelius, Cantique for Violin & orchestra op. 77/I