The 'player piano', or mechanical piano has probably been the conceptual precursor of the modern techniques of music sequencing. Her prepared data encoding music for playback always identical from one instrument has sometimes been implemented in software as a sequencer functions, enabling musicians playing an atavistic mechanism, which is the live recording of the musical score through its execution and the subsequent endless reproduction. Abstracting the pattern of operation of equipment, attach it and readable, Memories of Malfunction, Classifying Apparatus and Method of Melissa Dubbin and Aaron S. Davidson is a musical instrument mechanic who reads his score on a long roll of paper in the loop on which the notes are notified through barcodes. Passing data visible it 'displays' the sound of running time as the key or the handle of a music box. The circular movement of the paper band goes hand in hand with the music and its signs of black vertical lines will mark the sound variations. But these data are encoded according to the standard bar codes, and then the almost invisible, as interpreted only by the machine. Their overview provides no information to predict the sounds arising out of it, and the only interface between the data and the sounds remains the code reader with the range of his red.