Informācija no mākslas organizācijas (pārbaudījusi Operabase)
Sofia Gubaidulina XI International Festival of Contemporary Music CONCORDIA by Gubaidulina, Berlioz, Tanonov, Alexey, Petrovics, Schnittke, Tchaikovsky, A., No (2021/2021), Diriģents Alexander Sladkovsky, Saydashev State Great Concert Hall, Kazan’, Russia