Andreas Tilliander's TM404 project – with tracks recorded in real time and no work done in post – is a tribute to a handful of genre-defining Roland drum machines from the 1980's (the 202, 303, 606, 707 and 808). As evidenced by the self-explanatory track labeling, his output solely makes use of the aforementioned hardware, which was pivotal to the development of acid house and techno. Yet he avoids fetishizing its squelchy synth sounds by conjuring up polyrhythmic, hypnotic dub melodies, which he refers to as "somnolent acid".