Greece and Ellinikí Radiofonía Tileórasi (ERT) originally chose to host a National Selection, but then decided on an Internal Selection. Sakis Rouvas was chosen with "Shake It" and placed 3rd at Eurovision.

At first, ERT organized a National Final that consisted of a Pop Idol style TV show called Eurostar which started on December 5, 2003. 36 people were selected to compete and were divided into three groups of twelve. The contestants of each group had to compete against each other over two heats. The six contestants with the highest score of each group proceeded to the following round. Apostolos Psichramis was the winner of the final and was supposed to move on to a selection process for a song, however, ERT internally selected "Shake It" by Nikos Terzis, sung by Sakis Rouvas after they had finialized a deal with him to sing. The winner and the two finalists from Eurostar were then given the opportunity of performing back-up vocals in Istanbul, Turkey.

As Greece had not finished in the top 10 at the 2003 Contest, the song was first performed in the semi-final. It was performed tenth following Monaco's Märyon with "Notre Planète" and preceding Ukraine's Ruslana with "Wild Dances". At the close of voting, it had received 238 points, placing 3rd in the 22-strong field and qualifying for the final.

In the final, it was performed sixteenth following Macedonia's Toše Proeski with "Life" and preceding Iceland's Jónsi with "Heaven".

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Wikipedia