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 Sax/Bass/Guitar Trio playing "In My Life" by The Beatles, Someone To Watch Over Me-Trumpet, Cello, Violin & Viola, Bridal March (Here Comes the Bride) - Trumpet, Violin, Viola, Cello