Answer
The song that Serbia ended up performing in the Eurovision Song Contest 2013 was Pred da se razdeni. The song was written by Ana Đurić, Knez, Nebojša Stefanović, and Nenad Jezdić, and was performed by Knez. The song was a slow ballad, and it was about a man who is waiting for the sun to rise so that he can see his lover again.