Concert for loudspeaker orchestra, large turntable and two performers Makrograph is a giant turntable capable of “playing” records with a diameter of 82.9 cm made from a wide variety of materials and featuring diverse surface textures. Whereas a traditional turntable uses a stylus that travels through a groove and converts its vibrations into sound, Macrograph scans the record’s surface with a laser beam. The resulting digital data then serves as the source material for musical composition.