The aim of this work is to explore the Mexican music, specifically the mariachis in the context of immigration. Originally, mariachis were regional music groups from the region of Jalisco. However, with the initiation of mass media and the development of Mexican Revolution in background, this regional music style was modified as a national form of representation. Today the modern mariachi ensembles, which are included in the representative list of Intangible Cultural Heritage by UNESCO in 2011, have a symbolic character and are considered as fundamental element of Mexican culture. In Spain mariachis were already known in the 1940s with the onset of the film industry. However, the first professional ensemble did not came in until the 1990s to Spain. Due to the big demand, the mariachi scene is developed rapidly. Today, alone in Madrid, there are more than 200 active ensembles. However, in recent years because of the economic crisis the order situation has deteriorated significantly. As a result of that, the mariachi scene is dominated by a massive competition. This situation also has an impact on the musical performance of the groups. Consequently, there is a reduction of certain elements, regarding the repertoire, the ensemble, the instruments and the arrangement. For example, due to the lack of string instruments, accordions are used. Mariachi-music in Spain definitely is a phenomena of upper-class, because only this social class can afford to engage a mariachi-group. As today there are many ensembles, which are compound of non-Mexican musicians, Mexican minority in Spain has a threatened feeling about its "Mexicanism" and responds with discourses such as authenticity and national pride.