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 Frank Zappa/Gerald Fromme: Black Page for Percussion, Thomas Rajna: Suite for Violin and Harp; Anna Verkholantseva-harp, Valeri Kikta: Sonata for Violin and Harp (1998); Anna Verkholantseva-harp