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 XIII Virtuosi: REQUIEM PARA UM TROMBONE (with strings) - [2] Dies Irae - Rex /Nada Temas, XIII Virtuosi: REQUIEM PARA UM TROMBONE (with strings) - [6] Libera me