Términos de relación MARC : adaptación BNM Biblioteca Nacional de Maestras y Maestros es Arreglos (música) arr A person, family, or organization contributing to a musical work by rewriting the composition for a medium of performance different from that for which the work was originally intended, or modifying the work for the same medium of performance, etc., such that the musical substance of the original composition remains essentially unchanged. For extensive modification that effectively results in the creation of a new musical work, see composer. Quien desarrolla la polifonía vocal. Es muy frecuente en las melodías populares, para su interpretación por parte de coros.