Flow is an nearly infinite procedural composition based around mixing lots of saw waves detuned in a particular manner. To check it out you can either compile and play yourself:
gcc -Ofast flow.c -o flow
./flow | aplay -r 44100
Or, you can stream it from my server. Every person streaming it hears the same part of this composition.
curl -L laserbat.pw/flow | aplay -r 44100
If you don't have a linux machine nearby, you can just listen to a pre-recorded OGG fragment of this composition:
https://laserbat.pw/stuff/flow.ogg
With default constants, flow will keep playing for 13.2 million of years without repeating. This limitation is caused by finite size 64-bit integers.
An extended composition based on flow.
gcc -Ofast flow2.c -o flow2
./flow2 | aplay -c 2 -r 44100