Jun 272021 Stamatia Gerothanasi, Athanasios Trikoupis, “Unknown Greek art song of the 19th and 20th century”
Jun 292021 “Trisevgeni Kalokiri” Choir- Department of Music Studies-Aristotle University, “Choir music”
Jun 292021 Choir of the Faculty of music Studies of the National and Kapodistrian University of Athens
Jan 302021 “The contribution of Lykourgos Aggelopoulos, cantor of the Holy Archdiocese of Constantinople, the Byzantine Music Education and Musicology generally ” (Part C)