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 Thomas Morley: Duet No 6, ukulele & mandolin (1597), Tudor/Renaissance music, Branle Charlotte (Thoinot Arbeau, 1589), French renaissance dance on mandolin, Irish ukulele: Carolan's Concerto (fifths tuning)