APC Musical Instruments was founded in 1976 by Antonio Pinto Carvalho to manufacture stringed instruments and by 2016 it employed 45 craftsmen and other employees. Antonio Pinto Carvalho came from a family of luthiers and since 1961 had learned the craft from his grandfather. APC offers acoustic guitars and a wide range of traditional Portugese instruments as well as all sorts of folk & world stringed instruments.