Introduction – Generative Art and Rules-Based Art

scores for free interpretation present systems of abstract symbols without a intended or predefined mapping into a multidimensional qualia space. The live performer invents a mapping from the abstract symbols into a property such as pitch, or color, or energy level, and then performs the score. Needless to say, some of these mappings will be more improvisational than others. Earle Brown (Beyond Geometry) – A different piece from Earle Brown was presented in the Beyond Geometry Sound Room. The textbook example, and early high bar, of an abstract score for free interpretation is Earle Brown’s December 1952. The players translate the abstract parameters of graphic forms into sound by a performing mappings of their own invention. For example, the horizontal dimension might be pitch, and the vertical dimension loudness.