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 Gon Bops Alex Acuña Signature Timbales, Gon Bops Red Rock Bell - Cowbell Instrument, Gon Bops Timbero Series Bells - Cowbells Demo