With Le Slie's, Fabrizio Di Salvo and Roberto Maqueda present a newly developed instrument based on the physical principles of the legendary Leslie speaker – the rotating loudspeaker system developed in the 1940s for the Hammond organ, which became world-famous for its characteristic, floating, and expansive sound movement. Twelve metal sound discs, rotating in a circle around the audience, create a vibrating, room-filling sound field – an acoustic experience reminiscent of the movement of celestial bodies and connecting in a unique and innovative way to the exoplanet theme of the Interfinity Festival 2026. Like miniature planets, driven by mechanics, light, and sound, they orbit the central performer computer. Each unit unfolds its own "gravitational field" of resonance. Inspired by astrology and cosmology, a sensually perceptible, sonic planetary system emerges.

The twelve sound stations – some made of metal, some of glass – are set in rotation by servo and solenoid motors and precisely controlled by a drummer. The system is complemented by a self-learning artificial intelligence that reacts in real time and generates independent sonic impulses. The interplay between musician and machine creates a dense acoustic tapestry of movement, resonance, and rhythmic variation.

The performance takes place in the imposing bricklayers' hall at the Basel School of Applied Arts – a unique space whose industrial architecture and raw acoustics make the sound vividly tangible. The circular arrangement of the sound discs, combined with rotating light elements, transforms the space itself into an instrument – an immersive, technically precise sound installation at the intersection of music, machine, and perception.