The esoteric noise duo known as HEXA is the sonic union of Xiu Xiu's focal point Jamie Stewart and sonic provocateur Lawrence English. Their collaborative work has been described as being possessed by cascading low frequency pulses and tectonic plates of sound, suspended in cavernous cathedral-like spaces.

Legendary noise artist Merzbow needs no introduction, given his prolific output and notorious experiments within the realm of human endurance and audible extremes. While Merzbow has remained a solemn figure within the canon of noise, he is no stranger to the members of HEXA, having collaborated with Jamie Stewart as a duet on a collaborative Merzxiu LP in 2015. On the other side of the spectrum, Lawrence English has curated numerous concerts for Merzbow across his native Australia.

The result of this collision turned into a full length album, aptly titled Achromatic. Focus laid on the severe reverberation of relative noises, brandishing extreme frequencies familiar only to Merzbow and coupled by HEXA's brutalist pulsation. Each side of the album is produced and mixed by the other, making their audio interpretation of Achromatic a sort of reverse exquisite corpse. A true snapshot afterthought from the decay of the modern age.