Other key moments in her career were the invitations from the Franz Liszt Academy of Music in Hungary and the Sorbonne University in France where she gave a Master Class about Byzantine Music. Nektaria has presented many concerts of Byzantine and Traditional Folk Music in Greece and abroad (in France, Hungary, Serbia, Turkey, North Macedonia, Bulgaria, Estonia, Switzerland, Letonia, Luxembourg, Spain, Italy) while she has collaborated with the greatest traditional singer of Hungary and UNESCO artist for Peace Marta Sebestyen and the distinguished choir the St. Ephraim male Choir.