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 MANTRA: OM AH MA RA NE ZE BEN TE YE SOHA-1, KARMAPA-Dorje Sempa Empowerment, Achi Drolma mantra