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 Iannis Xenakis - Mikka "S" (w/ score) (for violin solo) (1976), Levantis - Music Hall [TTT 014], Gérard Grisey - Solo Pour Deux (w/ score) (for clarinet and trombone) (1981)