To anyone who says there are too many music makers in the world, maybe you aren’t aware of how much sound is in the world. Crowd-sourced iPhone recordings and the ghost of John Cage are here to set you straight.

First, there’s the app – the 4’33” app is an official, licensed app that makes field recordings to the exact specifications of John Cage’s infamous score as premiered in 1952 by pianist David Tudor. And yes, that means it even comes in the score’s original three movements – a fun fact you should definitely share at parties. (Hey, where did everybody go?)

The app has been out since 2014, courtesy John Cage Trust and publisher C.F. Peters. (Yes, C.F. Peters still owns the rights to a score that contains … nothing.) It’s $0.99 – a small price to pay for… well, for a new way of perceiving all the sounds of the world, maybe?

What’s really astounding about this is not so much the app, though, as the collection of sounds the app has made worldwide. And that has grown in the half decade since the app’s release. You might expect them to all be clustered around New York, San Francisco, and London, but instead six of the seven continents are represented. The iPhone microphone is pretty decent at recording a general monophonic ambience – a fancier stereo recording would do better, sure, but the phone somehow makes a representation of how we perceive and remember those spaces. So you can have a charming journey around the planet and its sounds.

And I think to myself, what a wonderful world…

4’33” App for iPhone [App site and interactive map with sounds]