“Apparatum,” commissioned by Adam Mickiewicz Institute, is a musical and graphical installation inspired by the Polish Radio Experimental Studio, which is one of the first studios to produce electroacoustic music. It is the fruit of digital interface meeting analog sound. The sound is generated based on magnetic tape and optical components. Boguslaw Schaeffer comes up with his personal visual language of symbols and cues and composes “symphony—Electronic Music” for the sound engineers. With two 2-track loops and three 1-shot linear tape samplers, they obtain noise and basic tones. They utilize analog optical generators based on spinning discs with graphical patterns.