GC / NC is an electroacoustic duo based in Belgium and the Netherlands, consisting of Sjoerd Leijten and Patrick Bossink. They play instant electronic compositions using self-programmed software and self-made controllers. "Deprecated" is the result of a residency at studio Klangendum inside Worm in Rotterdam, where the duo explored the realm of broken, obsolete and unwanted sounds and experimented with various classic synths (a.o. ARP 2500, Serge), combined with bicycle wheels, guitars, radios and audio programming environment SuperCollider. Through the use of magnets, reed switches and arduinos (microcontrollers) in conjunction with audio coding environment SuperCollider, GC / NC turn bicycles into electroacoustic instruments. The wheels of the bicycle are controlling the sound of their instruments - a guitar and a synthesizer, with the musicians spinning the wheels to produce sound. The wheels function as disruptive elements; a voluntary self-sabotage, since they are not able to play their instruments in the conventional manner. A radio is used to record small fragments of radio channels which are directly used in the performances. Digipak.