At Eliminatory round, two works of contrasting styles must be presented, by free choice of candidates, not exceeding 12 minutes of total time in Junior category, and 15 minutes of total time in Senior category.

At Final round, repertoire of free choice must be presented, not exceeding 25 minutes of total time in Junior category, and 35 minutes of total time in Senior category. Works played in the Eliminatory round cannot be repeated in the Final round.

For the constitution of the ensembles, it will be accepted groups of 2 to 12 musicians, of any instrument, whose formation can not be altered at any stage (warning: this information does not replace the necessary knowledge and reading of general rules).