It seems like such a simple thing. A four minute and thirty three second musical score with no notes. It sounds like Seinfeld's "show about nothing". But it's more than that. Read the background info to get some context. Listen to one of the recordings. It's like a glimpse into four minutes and thirty three seconds of someone's life. Then make your own recording. That's when it gets interesting. It becomes a meditation, a challenge, a performance.
So much nothing. But more.