Guglielmo Barzacchini, known professionally as TSVI, is an Italian producer and DJ based in London. He co-founded the label Nervous Horizon, which serves as a primary platform for his exploration of skeletal, percussive club music. His debut album Inner Worlds, released in 2018 on Nervous Horizon, synthesized his Hindu upbringing with diverse global rhythmic influences. Recent work, such as the 2026 Dance Tripping EP, marks a shift toward textured sound design and minimal, groove-led club functionality. He maintains a consistent presence in the international underground circuit, often bridging the gap between UK bass, techno, and experimental club rhythms. His ability to distill complex polyrhythms into functional, high-impact dancefloor tools establishes him as a pivotal figure in contemporary electronic music.