She is of mixed religious origin – her father is a Roman Catholic[citation needed] and mother Orthodox Christian.
Before she participated in Operacija trijumf, Petković took part in many festivals, such as Evropesma and Montevizija,[1] sometimes solo, sometimes with her band Dan Poslije.
The Operacija trijumf, Balkan version of Endemol's Fame Academy, started broadcasting on 29 September 2008.
Alongside her Operacija trijumf contestant Sonja Bakić, Petković recorded a song named "Samo".
Petković admires Roger Waters, Alanis Morissette and Oliver Mandić;[1] she stated she finds herself in the song "Comfortably Numb".