Giannis Kalatzis (Greek: Γιάννης Καλατζής, born 29 April 1943) is a Greek singer who was especially popular in Greece in the late 1960s and the early 1970s.[1]\r Giannis Kalatzis was born in Thessaloniki in 1943. His career as a singer began in the early 1960s when he was a member of the Trio Moreno in Thessaloniki.[2] Kalatzis later moved to Athens, where he co-operated with the famous Greek composer Giorgos Mitsakis. His popularity began to increase and he had a productive collaboration with some of the most famous Greek composers of the period - Manos Loizos, Stavros Kougioumtzis, Giorgos Katsaros, Mimis Plessas, Giannis Spanos, Tolis Voskopoulos and released albums with Giorgos Dalaras, Haris Alexiou, Giannis Parios. He also appeared in 9 films.