I just found the video is in YT since 2018. Lindsey appears after a nice intro where the white album is mentioned, at 54:00
I read that
by the time Lindsey was thirteen, he had fallen under the sway of folk music, especially the flat-picking style of the Kingston Trio, who were almost local heroes since they were based in San Francisco, only a few miles north.
https://www.youtube.com/watch?v=RKOwdJhTL2I&t=3240s