John Cage recital set to last 639 years recently witnessed a chord change

Someone must have played it sped up? Is the music public?

You're missing the point.

Yes, but the piece is specifically composed to be played "as slowly as possible" fwiw.

We’re missing the performance otherwise. Unless you’re immortal.

I think you're starting to make progress towards the point.

You're not missing the performance. It's playing right now, and will play your entire life. You just don't get to see what comes next, how it changes, and how it ends.

Just like life.

Is there a point?

Here's a 90 second edit of a 24 hour performance where they have just included the chord changes:

https://www.youtube.com/watch?v=vv_bXRMTJog

Fair warning, it sounds very jarring and disjointed.