This is one of the best fishmans audio. Before the specter of their break up and final performance but with their most advanced work... It encapsulates so much about fishmans
I doubt that you can buy a copy. I was in Japan at the time. This "dub session" was broadcast on a TV show, after which bootleg copies of the video and a bootleg CD made the rounds. I was fortunate to get hold of a CD copy, but over the years, it disappeared. We're damn lucky to able to hear this fantastic version here on RU-vid.
if Sato knew he was gonna die, he probably wouldnt have wasted as much time on that intro, however I dont think the crowd would have been pleased to see Sato run around on the stage saying 'im gonna die! im gonna die! help me!' etc etc. with the spirit of death chasing him. no one wants to see that.