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 Marathonas 1 Kertsopoulos Gregoriadou Double-course guitar, Variations & Canon 1 Gregoriadou Guitar Violin Cello, D.Scarlatti: Harpsichord Sonata L23 - Gregoriadou - High-tuned pedal guitar