Muguruza doesn't belong to any musical genre in particular but some punk, ska, jazz, jungle and funk influences can be found. Most songs contain political themes, with some promoting internationalism and social justice. Gizon Armatuak is about death squads in Central American countries, Big Benat denounces globalisation and uniformisation, while in Mendebaldarketa Muguruza laments on the situation of immigrants. In Diru Espainol Zikina he ridicules the appearance of murderous historical figures such as Hernán Cortés, Pizarro and Christopher Columbus on paper money, arguing it represents the arrogance and imperialism of the Spanish government.
