uniformity, cohesion, and unity are all intertwined - they are also underlying factors in most of the judging criteria in rio's annual sambódromo competition, a core activity of the carnival's elaborate venue.

harmony or, harmonia in portuguese, describes this judging criterion - this is perhaps one of the most subjective and difficult elements for a judge to score.

a performing samba school is being scrutinized and evaluated while they parade in front of the judges - their performance must be fluid and rhythmic at all times.