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 New Cubase Beat - Orchestral Piano Sounds Vol. 12 Made by MuSick (VectraOPC87), New Cubase Beat - Orchestral Sounds Vol. 3 Made by MuSick (VectraOPC87), New Cubase Beat - Orchestral Sounds Vol. 10 - Sad Orchestra Beat Made by MuSick (VectraOPC87)