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 Treorchy Male Choir & Tom Jones singing Amazing Grace, Treorchy Male Choir singing "How Great Thou Art" with Bryn Yemm, Treorchy Male Choir & Leo Sayer singing Sound Of Silence