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
Los Super Seven self-titled album. Their musical style has changed with each incarnation, blending sounds from Tejano, mariachi, Cuban, Afro-Peruvian, Brazilian, blues, rhythm and blues, country, jazz and rock. The personnel included the members of The Texas Tornados, Los Lobos, Calexico, Ozomatli, and other famed musicians. Los Super Seven Los Super Seven are a predominantly Latin American supergroup which debuted in 1998. According to Allmusic's Stephen Thomas Erlewine, "Los Super Seven isn't a band, per se -- it's a collective, organized by manager Dan Goodman, who comes up with a concept for each of the group's albums and assembles a band to fit."