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 KETRON SD1000 CHOIR SOUNDS Part 10/20, KETRON SD1000 ORGAN SOUNDS Part 4/20, KETRON SD1000 STRINGS SOUNDS Part 9/20