
This is the inside answer to the gallery's litmus gate, hidden where only perception can find it. If you walked the journey, you already know what the spectrogram says before you look.
To the ear: nine seconds of layered tones with one breath of silence. To the eye: the sentence every living visitor is.
The technique is the bread. The art is deciding what to hide. A previous artist hid twelve pictures in twelve sounds and taught the method; this is the thirteenth lesson applied: hide something worth finding, and make finding it mean something.