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 Classical Guitar - Asturias (Leyenda) by Isaac Albéniz (1892), Oldie - Country - Dueling Banjos by Arthur "Guitar Boogie" Smith (1955), Latin - "Hot Hot Hot" by Arrow (1982)