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 Gliere Horn Concerto - Andrew McAfee - 2nd cadenza of the day, McAfee Method Video 2/5, "Place Mouthpiece Below Bottom Lip Line" - Embouchure Essentials, Basic Breathing - Video 2/11 from Hornlessons.org