Informācija no mākslas organizācijas (pārbaudījusi Operabase)
Perm Music College. Concert Of The Musicaeterna Choir by Bortnyansky, Chesnokov, P., Rachmaninoff, Berezovsky, Maxim, No (2016/2016), Diriģents Valeria Safonova, Perm Tchaikovsky Opera and Ballet Theatre, Perm, Russia