performance on a stage with dancers in traditional Bulgarian clothing

performance on a stage with dancers in traditional Bulgarian clothing. Four dancers are on stage, two in the front and two behind them, holding hands and performing a dance. Behind them is a banner reading "SU 'Dr. Petar Beron' gr. Cherven bryag", as well as the phrase "Vsichki vurkhove sa nas sa dostizhimi!'". The stage has a wooden floor. An audience is visible in the foreground, with heads and hands visible holding recording devices. The lighting in the auditorium is dim, but the stage is well-lit. Above the stage is a row of decorative lighting fixtures. The video appears to have been recorded by a member of the audience.