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
Mariachi El Bronx (2009 album) the album's release, calling it "a whole different outlet – we can go tour with bands The Bronx couldn't go on tour with." The first Mariachi El Bronx song to see release was a cover of Prince's "I Would Die 4 U", released on the tribute album "Purplish Rain" in June 2009. The following month the band announced that "Mariachi El Bronx" would be released on September 1 through Swami Records, who had released the vinyl version of their second album, 2006's "The Bronx". In July "Spin" exclusively debuted the song "Quinceniera" as streaming media on their website. The website