ONE was a boy band that first appeared in 1999, recognized as both Greece and Cyprus's very first boy band. The band was formed by leading Cypriot-Greek composer Giorgos Theofanous and Minos EMI A&R Manager Vangelis Yannopoulos. Constantinos Christoforou and Phiippos Constantinos were on board quite early, chosen by Giorgos Theofanous. The next three members were picked up after a selective audition that took place in legendary Athenian Sierra Studio. The selecting committee consisted of Natalia Germanou, Posidonas Yannopoulos, Andreas Kouris, Themis Georgandas, Theofanous and Yannopoulos. Demetres Koutsavlakis, Argyris Nastopoulos and Panos Tserpes were retained among 179 candidates. In 2003 Christoforou left the group shortly before the rest of the band formally disbanded. In their 6 year existence they enjoyed much commercial success and earned platinum certifications, as well as having staged memorable performances with successful Greek singers at music halls and in concerts.
In July 1999 they released their first single, with their debut album following in October. All music and lyrics were written by Giorgos Theofanous (as was all the rest of the musical recorded material of the band) while Vangelis Yannopoulos was producing.