A ring-shaped DJ controller was designed to compress a full deck into a compact, donut-like form that fits directly in the hand. Tuno was created to make DJing more accessible and part of everyday life, not limited to stages or studios. Through its circular interface, two tracks can be mixed, with EQ and effects adjusted through simple, intuitive gestures. The concept was shaped through research into DJ workflows and hands-on interaction with equipment. By reducing scale without removing control, the device allows spontaneous music mixing anytime, anywhere.