This is one of the most amazing musical performances I've ever seen, Theresa Andersson's Oh, Mary don't you weep. She accompanies herself in both vocals and violin, live multitracking and looping, the effect is mesmerizing and stunningly beautiful. She has more talent in her toes than most people have in their whole bodies. Watch her feet carefully.
Probably so; Tash's first known recording was several years after the release of Andersson's "Oh Mary." Of course both pay homage to Les Paul and Mary Ford who were doing multi-tracking self accompaniment back in the 1950's.