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) to speak. A lot of bands play it safe and make the same record over and over again [...] It was just one of those things, where we got asked to do an acoustic thing for Fuel TV, and it's like nothing sucks more than rock bands playing acoustic rock songs. You know, it just sucks. So we did a song mariachi style, and it just opened up this whole thing where we were like 'This is awesome.' So we wrote some songs, and it just became." He speculated that Mariachi El Bronx might tour with The Hold Steady after