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 Concerto pour Trombone et Harmonie de Rimsky-Korsakov (2e et 3e mvt), Concerto pour Trombone et Harmonie de Rimsky-Korsakov (1er mvt), Concerto pour trombone - Ferdinand David