Kalomira was born Marie Carol Sarantis in New York, U.S.A. on the 31st of January,1985 to Greek parents. Since early childhood, Kalomira’s dream was to become a pop star and she participated in all extracurricular activities at school (such as drama productions, musicals, recreational events), which showcased her dancing skills as well as her passion for singing. Kalomira studied viola - her favorite musical instrument – for nine years, and was a member of the school orchestra. She won the second place at a music contest organized by WBLI Radio and participated as supporting act in different live shows of famous American stars, such as Jessica Simpson, LL Cool J and Jennifer Love Hewitt. 

At the age of 19 Kalomira left America and came to Greece to pursue her dream. She participated in the Greek television talent show "Fame Story 2" where she instantly charmed the Greek audience with her innocence, sincerity and polite manners. Consequently her winning first place did not come as a surprise. Her first album, titled "Kalomira", was released in 2004 and included songs with both Greek and English lyrics. The album went to #1 in the Greek album chart and won a gold award for sales and Kalomira was named  the "New face of 2004". Her popularity surpassed Greek borders, and during the Athens Olympic Games, she was interviewed for various  television shows on US channel NBC, as one out of ten most popular artists in Greece.

With her second solo album "Paizeis?" released in 2005 Kalomira debuted as a songwriter, composing the music and writing the lyrics for "Just Want You To Want Me". The album reacjed the Top 3 in both Greece and Cyprus. On her third album released in 2006, "Kalomira Paei Cinema" (Kalomira Goes To The Cinema), she sang modern arrangements of popular Greek cinema classics. The album reached the Top 10 in Greece. Also in 2006 Kalomira was involved in the multi-artist charity single "Gine Mazi Mou Paidi", which was a fundraiser for the poor and disabled of Greece.

Kalomira has worked next to well-known Greek artists, like Despoina Vandi, whom she accompanied on a tour around Greece and Cyprus, Stamatis Gonidis and Elli Kokkinou. The duet she sang with Dionysis Savopoulos, at the Herodium Ancient Theatre is one of the highlights of her career.

Showing her talent and versatility, away from music, Kalomira has also been successful as a telrevision presenter in morning and prime-time shows, as well as an actress in TV series. 

The composer of this year's Greek entry Konstantinos Pantzis is a newcomer to the contest, but for lyricist Poseidonas Giannopoulos it's a second successive year at the contest, as he also wrote the lyrics for the Cypriot entry in 2007; "Comme Ci Comme Ca". This makes him one of the few songwriters to have entries in two different languages in the contest.   

"Secret Combination has been re-arranged since the Greek final, and the intro changed after suggestions that it used a sample of another track. Howeverm, with a run of good results behind them it's no surprise to see Greece among the Top 10 favourites in Belgrade and the song has also being showing well on internet fan polls.