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Sound is produced by the combined efforts of noise-energy and the structural quality of instruments present in resonance. The composer as an instrument of the subtle interaction of energy secures the information within the chosen frame of observation. Objective composition is replaced by subjective composition of perception, the organization of reflecting sound relating to the matrix of the cultural and cognitive associations of the listener. The listener is no longer a passive consumer but an increasingly active creator of his own experience. The composer takes into account not only the rigid relations of conceptual notes but also the high-energy interactional phenomena of tones in sound patterns as resonance, beat, combination tones and phase - shifts. Consonance is supplemented by dissonance as sound is able to develop its full psycho-acoustical effect.