Guglielmo Barzacchini, known as TSVI, is an Italian DJ and producer based in London who has become a central figure in the city's underground rave scene. He co-founded Nervous Horizon, a label dedicated to stripped-back, highly percussive club music that draws from kuduro, experimental techno, and sounds from across the globe. His 2018 debut album Inner Worlds reflected his Hindu upbringing and Sufi Islamic influences, blending primal percussion with eastern instrumentation and melodic textures. Under his Anunaku alias, launched in 2019, he releases dancefloor-focused tracks on AD93 and other labels, exploring intricate drum patterns with celestial synths. His recent work shows a shift toward tech house and functional groove-driven designs while maintaining the percussive DNA that defines his sound.