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 Émile Jaques Dalcroze - Violin Concerto No.1 in C-minor, Op.50 (1901), Joseph Haydn - Arietta con variazoni in E flat major Hob.XVII-3, Franz Krommer - Sinfonia Concertante in E-flat major for violin, flute & clarinet, Op.70 (1808)