Mariachi was heavily involved in cultural promotion as a way to create a unified Mexican identity after the end of the Mexican Revolution. One of these efforts was the promotion of mariachi as an international symbol of Mexican identity, first with radio and sound recordings and later with films. Mexico built a nationwide radio broadcasting network in the 1920s such as XEB and XEW, which began broadcasting mariachi music as a media production, rather than as a music for social events. This music was already being modified in part due to the advent of sound recording. For example, most son jaliscense
Los Super Seven self-titled album. Their musical style has changed with each incarnation, blending sounds from Tejano, mariachi, Cuban, Afro-Peruvian, Brazilian, blues, rhythm and blues, country, jazz and rock. The personnel included the members of The Texas Tornados, Los Lobos, Calexico, Ozomatli, and other famed musicians. Los Super Seven Los Super Seven are a predominantly Latin American supergroup which debuted in 1998. According to Allmusic's Stephen Thomas Erlewine, "Los Super Seven isn't a band, per se -- it's a collective, organized by manager Dan Goodman, who comes up with a concept for each of the group's albums and assembles a band to fit."