»All sounds are loud,« we hear in Flammenwerfer – Hotel Pro Forma’s account of the Swedish painter Carl Fredrik Hill (1849–1911). Everything in this universe is transparent and layered. The orange hue in Hill’s art, flickering across the stage, crackles with both a beautifully golden noise and a psychedelic quality reminiscent of 1970s ceramics. In a central scene, Blixa Bargeld half-screams into a microphone and receives looped screams hurled back into his head. The patchwork of sound also includes five vocalists from IKI and selected pieces – the only music here that comes close to pop – by Nils Frahm.

The dark circles under the eyes are constantly pronounced. As are the letters that signal a new chapter, the next dive into the mind – for instance the section titled »Paranoia«. Here, IKI expands Einstürzende Neubauten’s »Halber Mensch« into five voices, allowing the hallucinations and anxiety to grow to full human scale. Yes, the sound was loud and numbing in itself. But it is largely thanks to IKI that we feel the extremes, the brain disease, and Hill’s experience of a »misarranged world«. They sang: »Heavy curtains drawn over the mind. A thick deadening cloud that blocks the use of senses.« And that is how it sounded. Cold. Like the saddest Instagram filter imaginable – with sound.

Unfortunately, Blixa Bargeld is used too sparingly in Flammenwerfer, which is not exactly a masterpiece from Hotel Pro Forma. Still, the gala audience sat very still in very soft seats and saw both a giraffe and a former queen on the same evening. The rest of Aarhus Festuge can only be more cheerful.