totally forgot about the knives.
I went to see ELP on their Black Moon tour - they were still REALLY good. I had my doubts as a tv show of a Greg Lake (with ASIA??) concert his singing was awful.
What amazed me was how when Emerson was jamming his knives into the keyboard, and then rocking and tossing the organ around - it was pretty close to the album. Not sure how something like that can be repeated.