Two prominent opera singers will bring the 2026 edition of Ciclo Aura to a close at the Teatro Colón. British-Italian tenor Freddie De Tommaso and American soprano Nadine Sierra headline the gala. The program draws on Italian and French staples, with arias by Puccini, Verdi and Bizet. The two stars are also scheduled to sing duets together over the course of the evening. An orchestra will support them under the direction of Constantine Orbelian. Beyond the vocal numbers, the program sets aside space for instrumental pieces as well. Appearances by both singers in South America are rare, since their schedules keep them busy in Europe and North America. That scarcity gives the Buenos Aires date particular weight.