Proporciones, alegorías, ángeles músicos y ejecución históricamente informada en los órganos de la catedral de México

An aesthetic analysis of the twin organs of Cathedral of Mexico. Correspondence between Pythagorean and Baroque arithmetical, musical and architectural proportions. The phonic composition of the acoustic altarpiece. The bodies of façade flutes, the internal echoes, ship flutes and horizontal trumpet. The sonorous expression of the streets, platforms, cornices and windows of the boxes of cedar and ayacahuite of the organs. The golden and ruddy angels on mute instruments. Organological iconography. Prehispanic instruments, classical Greco-Roman, Gothic, Renaissance and Baroque; an encyclopedic display. Current disposition of records. Designs of both facades.\udThe original composition of the tubes. Light and color result. Restoration of the original brightness and the painted figures in the mouths of the flute façade.\udDocuments in which all restoration must be supported; maintenance and care. Preservation and promotion of the Cathedral’s musical archive. Social function and cultural when restoring a patrimonial instrument.\udLiturgical and academic use to preserve and promote organ culture.\udThe instrument as a source of research; The Historically Informed Performance (HIP)