It's more about where he does it - its not about materials, unless sound counts as a material? Maybe.
His 'Times Square' piece - he played a constant really deep, resonating sound and played it over and over through a vent in Times Square, New York City.
I'm not sure whether I like it but its an interesting idea. Its different from some art, because you have to physically go there. The viewers are forced to experience it. You can close your eyes, but not your ears.
The deep tone is very invasive- very annoying I'd say.
For my project - this has made me think about placing speakers in specific places. Maybe setting up a landscape of sound? Like setting up speakers playing the sound of the sea or children playing on the beach, etc.
To do something like that here I'd need a big space, so there's no echo, getting speakers that are good enough quality that it doesn't obscure the sound: so you can't tell whether or not you're really there. I'd need to edit the sound in a particular way to make it feel like you're actually there.
So this is an experiment I could start doing tomorrow and into next week. I need to think about where I could set up this experiment e.g. project spaces, seminar rooms, etc.