He has co-worked with notable Greek singers (such as Giannis Poulopoulos, Marinella etc) and lyricists.
Olympiou has also cooperated with other Greek music artists, including Haris Alexiou, Michalis Hatzigiannis, Dimitris Mitropanos, Mimis Plessas, Pandelis Thalassinos and Marios Tokas.
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, and Tolis Voskopoulos.
At first it appeared, as through it would be difficult to obtain permission from composers such as Mimis Plessas, Manos Hatzidakis,