This is a sample of Greek Orthodox Byzantine music chanted by nuns in a Monastery of northern Greek Mainland (Hsuxastirio Timiou Prodromou Akritoxoriou Sidirokastrou Serron). The Hymn is an extract from a book called "Theotokario" and it is dedicated to the Most Holy Mother of God (Theotokos, Virgin Mary). It is usually chanted in Greek monasteries during the afternoon (after Vespers). The pictures of the video come from a different monastery of Northern Greece (Giannitsa/Pella, Iera Moni Agiou Georgiou Anudrou).