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titles[0] = "Formaci&oacute;n de escalas y sonoridades en el siglo XX";
titles[1] = "Escala de tonos completos o enteros I";
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titles[3] = "Escala de tonos completos o enteros III";
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titles[10] = "Modos tomados del Medioevo I";
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titles[13] = "Modos tomados del Medioevo IV";

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