Improvised, benevolent beeps, electro-acoustic touches, sound surfaces dark as the night sky. The soft roar of a stream, a blurred childhood memory or the echo of an incomprehensible future? The most beautiful drone, noise and ambient music has always asked fundamental questions: What is sound? What is duration? What is time? What is experience? Under the name Kassel Jaeger, the philosopher and scientist François Bonnet shows with concrete sounds what may never be linguistically comprehensible. No answers, but intoxicating questions. Whereof one cannot speak, thereof one must be silent.