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 JAZZ PRO - Piano, Guitar, Contra Bass, Drum, Trumpet, TRIO CHAMBER - Duet Singers, Piano, Violin, Contra Bass, SWEET ACOUSTICA - Piano, Guitar, Contra Bass, & Percussion