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
The Bronx (band) and "Shitty Future". Ken Horne of The Dragons played some guitar parts on the album, and soon joined the band as second guitarist. In April 2007, the band announced that they would record two new albums. "The Bronx" was planned as a punk rock album, while "Mariachi El Bronx" would be a mariachi album. They entered a recording studio in March 2008 to begin work on both albums, with Brad Magers (formerly of Christiansen and Your Highness Electric) replacing Tweedy on bass guitar, and Vincent Hidalgo (formerly of The Drips) also joining Mariachi El Bronx. That June they posted the