Hoshina Anniversary returns to MUSAR for his fourth appearance on the label with Sankaku, a five-track EP offering the latest snapshot of his ever-evolving ‘Watechno’ sound.

Taking its name from the Japanese word for ‘triangle’, Sankaku opens with a storming, floor-focused title track, pairing hypnotic techno rhythms with shifting textures and sharp acid drops. Tsuppari follows, named after the rapid hand thrusts used in sumo. Driving percussion, Japanese instrumentation and a raw techno pulse give the track a physical, forward-moving energy, making it a natural club cut.

Side B opens with Kono Kanjitte, where acidic tones meet jazzy elements and a playful sense of uncertainty. Slower and psychedelic, it unfolds as a track for restless minds and hazy nights. Ariake, named after the Ariake Sea, moves into more spacious territory, with Japanese instrumentation creating an atmosphere of mystery and anticipation, like looking towards an unknown horizon. Closing the EP, Itsukushimi brings a melancholic blend of melodic touches and darker cinematic tension, recalling the atmosphere of a Hitchcock soundtrack.

With ‘Sankaku’ EP, Hoshina Anniversary turns Japanese imagery, psychedelic textures and club-driven rhythms into a world that feels both familiar and otherworldly.