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Elliniki Radiofonia Tileorasi (ERT) held the national final on 18 March 1983 at its television studios in Peania, hosted by Mako Georgiadou. Originally, there were 11 songs taking part, but song 7, "Horos tis nichtas" by Petros Dourdouvakis was possibly disqualified, as it was not included in the voting results. The winning song was chosen by a 50-member jury composed of "experts" and members of the public.
"Mou les" was performed tenth on the night (following Finland's "Fantasiaa" by Ami Aspelund and preceding the Netherlands' "Sing Me a Song" by Bernadette). The conductor of the Greek entry was Mimis Plessas. At the close of voting, it had received 32 points, placing 14th in a field of 20.