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 Xylophone (Bells) Tutorial - The Second Line ( Mardi Gras Song ) Stephen Curtis "The Band Boomer", Trombone Tutorial - The Second Line ( Mardi Gras Song ) Stephen Curtis "The Band Boomer"