Virtual music scores
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In the first years of the 1980s, Emanuel Dimas de Melo Pimenta (Brazil, 1957) started to create graphical music scores in four dimensions, with the aid of computers. He was pupil of Hans Joachim Koellreutter (Paul Hindemith, Hermann Sherchen, Marcel Moyse) among others. Koellreutter developed graphical music scores, after Ligeti, Takemitsu, John Cage and others. Pimenta did not transpose the previous technique of composition, known as planimetrics, but recreated a totally new approach to the contemporary music creation. Pimenta also based his technique on research made on brain processes, implicating a transformation of synaptical patterns. This phenomenon he called "logical traps".