1) Silent sounds
Visualization of subsonic/ultrasonic sounds.
2) Silent objects/imagined sounds
Perhaps a “silent symphony” ?
3) Space (as in space-stars-planets-absence of air = hence sound)
Solar System / Interstellar sounds
4) Space – particularly: shaping acoustic spaces
Handcrafting a unique space that has a distinctive silent sound to it.
5) Silence as commodity
Selling noise-canceling headphones to New Yorkers.