Complex sentence: The Hellenic Electroacoustic Music Composers Association (HELMCA) is the only National association of electroacoustic music in Greece and registered as a non-profit organization (act.1059.91/2001).
Split into simpler sentences: The Hellenic Electroacoustic Music Composers Association (HELMCA) is the only national association of electroacoustic music in Greece. It is registered as a nonprofit organization (act.1059.91/2001).