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 [アカペラ]A Cappella Group Blue Voices(ブルーボイセス)2009.08.16 LIVE, [アカペラ]A Cappella Group Blue Voices(ブルーボイセス)2010.10.30 LIVE