Fermin Muguruza Ugarte (born 20 April 1963) is a Spanish Basque rock musician, singer, songwriter, producer, record label manager, and co-founder of the ska punk band Kortatu, active from 1983 to 1988, and of the crossover group Negu Gorriak, active from 1990 to 1996.
Born in Irun, Gipuzkoa, Basque