From the point of view of musical tradition, playing a running machine is an antagonism to playing a musical instrument. As soon as the instrument contains a part of the score, either as a running program (as with a pianola, other musicautomata or digital software) or as a sounding music structure (a DJ's turntable or a sampler), the traditional division of composition and performance, which includes as an essential moment the independent interpretation of the structure defined in the score (the work), is broken through.