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 Guitar Mandolin Orchestra Città di Brescia "Notte senza Luna" Angelo Bettinelli (1878-1953), Guitar Mandolin Orchestra Estudiantina Bergamo - Omaggio a Fabrizio De André - "La Guerra di Rosa", Mandolin and piano, "Allegro" by Domenico Scarlatti (1685-1757)