Prvi Glas Srbije (English: The First Voice of Serbia) is a Serbian television music competition that debuted on Prva Srpska Televizija in 2011.
After an act performs, the judges give comments and depending on how they feel about the performance, they press a button that lights a red or a green light.
If an acts gets two or three green lights, they advance to the next phase of the competition, but if they get two or more red lights, a trapdoor opens and the auditionee falls through it, which also ends their time on the show.
After the auditions are done, judges call all of the contestants who have gone through to perform again to select more acts that will advance in the competition.
At this phase, acts are divided in groups and perform in front of their mentors.