Morena retained her vigour on stage during yesterday's two run-throughs of the Eurovision's second semi-final but it remains to be seen whether this will have any impact on Europe's voting public tonight.
Emerging on stage decked in black and her dazzling, mirrored high-heeled boots, Morena gave a spirited performance and her voice was stable throughout her three-minute delivery of Vodka.
The background chosen for the stage at the Beogradska Arena features star-shaped snowflakes, to create the impression of spies (the dancers) infiltrating Russia at night with their torchlights.
Morena, together with backing vocalist Annabelle Debono and the four Swedish dancers, will have one more run-through this afternoon, before tonight's show, at 9.
Presented by Jovana Jankovic and Zeljko Joksimovic, the show will see 19 countries battling it out to be chosen among the 10 lucky entries for Saturday's final.
Malta's chances remain in the balance and, although Morena inched up one position to eighth place in the media poll, she slipped one place to 14th position in the odds offered by British bookmakers William Hill.
The Eurovision may be derided as a kitsch joke by many but more than 300 million people worldwide tune in to watch the final show on a Saturday night and it continues to grow with a record 43 competing countries this year.
However, each year, the debate on neighbourly votes emerges and, according to a scientist who has been studying the song contest for the past five years, a country's fate could be sealed well before the contest.
Although Derek Gatherer dismisses the idea of straightforward and widespread political bias, neither can cultural preferences be the key, as voting blocs have grown so rapidly in recent years.
He tells the BBC news website that the likely winners and losers are already clear.
"There are seven countries which are not involved in any kind of vote trading at all: Malta, Monaco, France, Israel, Switzerland, Portugal and Germany. They're at a serious disadvantage and are quite unlikely to win the contest, whereas countries at the centre of the larger blocs - like Serbia, Russia, Sweden and Iceland - have a much higher chance".
This year's format of two semi-finals has attempted to iron out these issues of neighbourly voting in a bid to create the fairest system possible. Traditional voting allies such as Greece and Cyprus and the Baltic and Scandinavian countries have been separated as much as possible but it is the public who has the power to determine the winner.
Meanwhile, the 10 countries that made it through Tuesday's first semi-final can heave a sigh of relief that the first round is over and start preparing for the final round.
The countries that sailed through the first semi-final, in the order they were announced, are: Greece, Romania, Bosnia & Herzegovina, Finland, Russia, Israel, Azerbaijan, Armenia, Poland and Norway.
Despite bookmakers' predictions, Ireland, with its parody Irelande Douze Pointe, sung by Dustin the Turkey, failed to make it to Saturday's final in Belgrade.
Dustin the Turkey, a glove puppet, may have recorded six albums and performed with artists such as Bob Geldof and Chris De Burgh but he failed to impress Europe's voting public, which is always full of surprises.
Tonight's second semi-final will be aired live on TVM at 9.