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 Improvisation/demonstration - Frédéric Blanc at St-François, Lausanne (Switzerland), Cavaillé-Coll organ of Nancy Cathedral - Marchand: Grand Dialogue en Ut, Improvisation-Demonstration of Dijon Cathedral - André Fleury