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 Roland Jupiter-80 Synthesizer Performance, Tony Royster Jr. soloing with the Roland TD-30KV V-Pro Kit!, Roland GR-20 pitch-to-MIDI transcriptions to Finale Print Music