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) performing "Cell Mates" in mariachi style under the name "Mariachi El Bronx". The punk rock album was released first, on November 11, 2008. Titled "The Bronx", it was their third eponymous album. The band supported it with a world tour from September through December 2008 covering Canada, the United States, Europe, the United Kingdom, Australia, and New Zealand, playing with bands such as Bad Religion, Every Time I Die, and Stick to Your Guns. In a December 2008 interview, singer Matt Caughthran commented that "["Mariachi El Bronx"] was something that was a part of us that we didn't really realize.