Participants of the online competition should send an a cappella program of their own choice. Instrumental accompaniment is allowed for no more than one piece.
Recommended video duration: 3 to 7 minutes.
Choral categories: minimum 14 singers in any category.
Category E: minimum 4 singers.
Categories A and B: 10 % of singers may be older than 25 years.
All groups may take part in Category X with different programs.
