I'm sure they played other works that night as well, but it shows a lot of dedication to actually have an orchestra "play" a piece that is silent the whole way through. Must've been a pretty trippy experience to have been an audience member that night. I'm not that ignorant, I understand that Cage's influence in this piece comes a lot fro Zen Buddhism and the idea that your environment can be music, but I still find it the situation to be pretty funny. If anything, I applaud whoever organized this and I'm glad they're putting a lot of effort into the performance, regardless of what the piece calls for.
What was the strangest performance you'd ever seen?