Festival Nacional de Bandas Oruro in Oruro
The Festival Nacional de Bandas de Musica fills Oruro's Avenida Civica Sanjines Vincenti with roughly 6,000 musicians the Saturday before Carnaval de Oruro's final day. Since Bolivia's Law 3611 of 2007 recognized it as national cultural heritage, the event has stood as a formal counterpart to the carnival's dance troupes, opening with a religious ceremony honoring the Virgen del Socavon before massed bands perform choreographed routines in Bolivian-flag colors.
Each year, in the days leading up to the final convite of Carnaval de Oruro, the streets along Avenida Civica Sanjines Vincenti fill with the sound of massed brass and percussion.