Dr. Olavo Alén says about the "generic complex system": "In his book Música Folklórica Cubana as well as in his opus masterpiece Del canto y el tiempo, he (León) shows us a panoramic view of our music departing fundamentally from the description of the original genres of Cuba. But those divisions proposed by Argeliers didn't pretend to be as rigorous as a scientific organization that would be in compliance with the classificatory principles of coherence, exclusivity, exhaustivity and most importantly, dychotomy."