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
Bands (Italian Army irregulars) units employed by the Regio Esercito originated from a mercenary Arab force employed by the Ottoman Empire, called "Basci Buzuk", that was created in Eritrea by the Albanian adventurer Sagiak Hassan in the second half of the 19th century. In 1885, the Italian Colonel Tancredi Saletta, commanding officer of the first Italian troops involved in the conquest of Eritrea, enlisted Bashi-bazouks in the service of Italy. As lightly armed irregulars the Bands were able to perform duties for which regular Italian and colonial troops were unsuited and at lower cost. Locally recruited bands were employed in the conquest of Italian