Eros Jaca believes in the current social relevance of music, and thus he founded HHMusik (Hispano – Helvetischer Musikverein) along with the Swiss pianist Camille Sublet, a society that acts as a bridge between public and private institutions in Switzerland and Spanish- speaking countries, fostering the dialogue and the cultural exchange through the organization and coordination of concerts and musical projects, for the most part in Swiss land.

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HHMusik receives support from entities as Kultur Stadt Zürich, Kanton Bern, Burger-gemeinde Bern, Migros Kulturprozent, Fondation Johanna Durmüller  - Bol, the Spanish Embassy in Switzerland and many more.