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 Interesting old French violin 2nd half 1800 バイオリン скрипка 小提琴 429, old antique German Schiller doubleneck harp contra guitar played by Jochen Bruenjes, Old violin labeled OSKAR SCHLOSSER # 454