Graciela Araya, mezzo Fulvio Bettini, baritone Paul Armin Edelmann, baritone María Espada, soprano Alfredo García, baritone César Augusto Gutiérrez, tenor Marina Heredia, flamenco singer Roman Ialcic, bass Enrico Iviglia, tenor Donald Kaasch, tenor Juanita Lascarro, soprano Thomas Laske, baritone Mireia Pintó, mezzo
