This expression is strongly associated with Hip-Hop and DJ culture. A turntablist is a musician who conceives the scratching and mixing of records on a twin-deck turntable as an artistic and expressive medium. Turntablism is the process of creating music this way, by employing techniques such as scratching, backspinning, cutting and crossfading.
Bibliography: Gallet, Bastien (2002). Le boucher du prince Wen-houei