Mariachi giving them modified shapes and tunings. In addition to instruments, the Spanish introduced the concept of musical groups—which, in the colonial period, generally consisted of two violins, a harp, and various guitars. This grouping gave rise to a number of folk musical styles in Mexico. One of these folk musical styles was the "son". This music featured string instruments. "Son" music divided into various regional varieties—the variety popular in the Jalisco area was called "son jalisciense", whose best known song, also referred to as "the mariachi national anthem," is “La Negra.” Modern mariachi music developed from this "son" style, with
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