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 Popular 1911 Music - John Young - When Johnny Comes Marching Home, Holiday Cheer with 1920s & 1930s Christmas Organ Music @Pax41, Dancing On The Edge With 1930s Jazz Orchestra Music @Pax41