Part of a research focused not as much on the structured sound but on its physical properties, the work is composed out of two separate parts.
On a microphone stand we have a speaker connected to an amplifier. In the speaker there is mounted a needle or nail which, when the speaker is active, functions as a pick-hammer. When placed within reaching distance from a wall and turned on there will be a very discreet mark that the point of the needle will create on the wall.
choose a wall.
trust it with your secrets. they will become very small.