QRS Music Technologies, Inc. is an American company specializing in the production and supply of a diverse range of musical goods. These include traditional pianos and their accompanying accessories, sophisticated Musical Instrument Digital Interface (MIDI) systems designed for acoustic pianos, and digital content along with music rolls for player pianos. Prominently, the company offers "Pianomation," an advanced MIDI system that integrates both analog and digital technologies to convert any conventional piano into a fully reproducing player piano.