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 Band Wagon (musical) that speed. (This was part of the new long playing "Program Transcription" series requiring a special 2-speed phonograph. Due to the Depression, they were never good sellers.) In 1954, the composer/arranger John Serry Sr. recorded s swing jazz arrangement of the song "I Love Louisa" from the musical for the RCA Victor transcription series which was broadcast over the radio throughout the USA ("See RCA Thesaurus"). The Band Wagon (musical) "For the film, see The Band Wagon" The Band Wagon is a musical revue with book by George S. Kaufman and Howard Dietz, lyrics by Howard Dietz and music by