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 Cry Baby Cry - The Beatles - Acoustic Guitar Lesson (easy-ish), The Guitarist's Way Book 1 - The Star - Guitar lesson, R.E.M. It's The End Of The World As We Know It (and I feel fine) - Guitar Lesson (easy-ish)