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 The Sound Of Music - My Favorite Things - Backing track / Karaoke, The Sound of Music - The Lonely Goatherd - Backing track / Karaoke, Fat Sam's Grand Slam - Bugsy Malone - Backing Track