Violence, racism, xenophobia and school absenteeism, are some of the prejudices and stereotypes that appear among students in many schools located in marginal urban areas with majority of population inmigrant and gypsy. The research focuses on the development and implementation of an intercultural education project supported in musical training which results from the different experiences in similar context. We hypothesize that musical training affects positively on the génesis of attitudes and values of respect and tolerance, as has occurred in countries as diverse as Venezuela, United States, United Kingdom and Brazil, to name a few examples. Methodologically it arises from a qualitative perspective using the ethnographic method and the techniques of the in-depth interview and the participant observation. The applied experience has generated the reduction of truancy, the overcoming of prejudices and stereotypes, and has allowed the construction of common spaces of coexistence and inclusion school, additionally promoting school success of such students.