Amazing clip firstly for seeing the sheer, visceral hatred Simon and Garfunkel had for each other at this point. Secondly watching Lennon morph back into the 1950's acerbic, bullying teenager he was stirring things up like crazy and loving what he's causing.
Imagine like 1880 and your brain is so pure that a guy playing the fiddle around a campfire juices your dopamine so hard you literally get up and start dancing.