In 2005, she started a professional involvement with popular Serbian singer Željko Joksimović. She became a member of Minacord Production Company. At the Beovizija 2005, she sang the song "Jutro" composed by Željko Joksimović, written by Aleksandra Milutinović and won. Jelena was considered one of the favourites, ultimately she missed out in controversial fashion at the overall Serbia and Montenegro final (Evropesma), when all four Montenegrin jurors overlooked it in distributing their points. This was the final appearance at the contest for a united Serbia and Montenegro.