The Greek Byzantine Choir was founded in 1977 by Lykourgos Angelopoulos and his colleagues, with the aim of presenting to the public the traditional Byzantine Music as it has been transmitted until the present day by both the oral and the written tradition. The Choir also aims at preserving the genuine Byzantine tradition by freeing it from the influence of the Western Music, which was extraneous to it. The appearance of this Choir marks an important step in Lykourgos Angelopoulos’ effort to protect the musical heritage. During its 30 years of existence, the Greek Byzantine Choir has taken part in more than 1000 concerts, in liturgies and other events in Greece and in 22 other countries in Europe, Asia, America and Africa. Among them, the all-night vigils at the Mount Sinai Monastery (1983), at Cologne (1985), at the Mega Spilaion Monastery (1987), at the Monastery of Vatopediou in Mount Athos (1995) and at the Cathedral of Saint Dimitrios in Thessaloniki (1993). The Choir has participated in numerous international festivals, as well as in the Athens and the Epidauros Festival in 1987. From 1989 to 1991, it perfomed once a year at the ancient theater of Epidavros. It also participated in the premiere of the contemporary work Rodanon by Michail Adamis and has presented fragments of ancient greek music and old roman chant. Finally, it performed in the Athens Music Hall in 1991 and each year from 1995 to 1998. The Greek Byzantine Choir has made several recordings of Byzantine Music in tapes, as well as six CDs published in France. From 1990, it initiated the recording of the works of the great Byzantine "maistor" (master) Ioannis Koukouzelis and in 1995, it published a volume with the title Ioannis Koukouzelis: Selection of his works.