The Turin Hub includes five primary schools set in the northern suburbs of the city: districts with economic and socio-cultural disadvantages, with strong multi-ethnicity and unsolved urban planning.

A primary school located in a peripheral area, characterized by a strong socio-cultural mix (40% immigrants): the school has 8% of special needs students.

Helsinki Hub is composed by Central Helsinki Music Institute and three primary schools located in Helsinki.

Colegio Manuel Nuñez de Arenas together with the parents Association Crecer con Music, devoted to music training form the Madrid Hub.

Ateneu has involved two childhood and primary schools: one located close to Manises city centre and one located at the confluence of two neighborhoods. In both schools the socio-economic and cultural level of the students is medium-low.