Hit record, leave the synth running, then come back in a hour...

It will create some nice self evolving ambient sound.
I remembered this kind of process have a name(a guy said it on Youtube, but I forgot which video), what is it called, again?

Should be the almighty Drone.

Should be the almighty Drone.
-- solitud

Thanks solitud.
Yeah, I thought about that, it's drone for sure. But that guy said something like *******(insert big word here) recording method.
EDIT: Found it! It's called an Aleatoric(chance or dice) recording. Here is the video:

EDITED Nov 17th 2015, 03:08