He has been studying piano, guitar, tenor saxophone, theory of music and taking vocal courses.

He performed in several concerts and festivals in United Kingdom, Latvia, Lithuania, Bulgaria, Poland, Spain, Italy, Malta, Norway, Estonia, Macedonia, Czech Republic, Belarus, Germany, Romania, Greece, Cyprus, and much more.

On 7 September 2004, Marios was selected from 54 entries to represent Cyprus at the 2nd Junior Eurovision Song Contest[1] on 20 November 2004 in Norway by televoting and by jury.

It was a special invitation to perform among famous Spanish artists and having in mind that he was the only guest star from the Junior Eurovision Song Contest.

He won the "Journalist Jury Award" and the 3rd Prize, "Best Singer" with the song "Agapi Magiki" ("Magic Love") (Music: Michael Roussos, Lyrics: George Ioannou).

In February 2006, Marios was one of the 10 finalists who pre-selected among 114 participations in order to select the one who will represent Cyprus in Eurovision Song Contest 2006.

In June 2006, Marios participated in the International Song and Dance Festival "Konin 2006" in Konin, Poland among 2500 participants from 11 countries and won 2nd prize "Silver Prize" with the song "Congratulations" (Music: Christodoulos Siganos, Lyrics: Christodoulos Siganos & Valentino).

In July 2006, Marios invited to participate in the XV International Festival of Arts "Slavianski Bazaar" in Vitebsk, Belarus.

In September 2006, Marios participated in the International Pop Festival "Canzoni Dal Mondo" in Naples, Italy and won the 1st prize, "Best Song" among 10 countries with the song "Congratulations" (Music: Christodoulos Siganos, Lyrics: Christodoulos Siganos & Valentino).

In December 2006, Marios invited to represent Cyprus into the International TV Song Festival held in Malta where the Maltese audience appreciated his participation.

In May 2007, the organizing committee of the International Pop Song Festival "Discovery 2007" in Bulgaria[10] invited Marios to participate as a guest.