Guerrero, musicians play for money. An old blind fiddler led by a grandson, or a trio with two guitars and an accordion. The music coming up from the rocky valleys of mineral Guerrero deriving from Spanish ballads with a heavy frontier admixture. Still today rural musicians gather for all-night stylized musical jam sessions of "bolas" and "corridos". These are both folk verse renditions of traditional vocal and guitar expressions. The musical trios that proliferate in the streets and popular markets of Guerrero perform songs of venerable composition. "With both western and prehispanic musical heritage, emerges a sonorous phenomenon transcendental for America. This had and has a significance of great importance for the development of the villages. With the ferocious and pitiless conquest, takes place a combination of rape by force and home invasion generating new structures. In the case of band music, a group of instruments or a combination of metals, percussions, woods…" "One of the most extended genres of America and especially in Mexico is the corrido; what's more it is the county where its diffusion reaches surprising ranges…" "In Guerrero and particularly in the zone of Zapatista influence Michoacán, Morelos, State of Mexico, Puebla, Oaxaca, the corrido reaches creative dimensions without comparison in the Mexican popular lyric. Work that is awaiting the specialists." Jalisco Jalisco's jalisciense son is the most traditional and representative style of folk music of the mariachi tradition. El Son de la Negra is one of the pieces more representative. In the 1990s, bands such as Banda Machos, and Banda Maguey popularized techno-banda. These bands were the music for the popular dance quebradita. Mexico City The regional music of Mexico City includes danzon, a Cuban style of music which also developed in Mexico City (in El Salón México) and Veracruz. It is comparable to tango for its elegance and complex structure. Cha-cha-cha is also an important style which was played a lot in the past century, it was very popular in Mexican films. Mambo, created by Cachao López in 1938 in Cuba, derives from Cuban style of music called rumba and was popularized by Perez Prado in Mexico City where he lived from 1948 to 1989. Mexican bolero also originated in Mexico City, one of the most important Bolero singers is Agustín Lara. Michoacán Michoacán's regional music includes Pirekua a song form of the Purépecha (Michoacán, Mexico). The singer of a pirekua, a pirériecha, may