Fermin Muguruza is a Basque rock musician, singer, songwriter, producer and record label manager. He's brother of musicians Iñigo Muguruza and Jabier Muguruza and is one of the personalities interviewed for the Julio Medem's documentary film The Basque Ball: Skin Against Stone (2003). Music career and socio-political views Muguruza has taken part in more than twenty albums, and is one of the most important artists from the Basque Country. In 1983 he founded a fussion ska hardcore band called Kortatu