Informazzjoni minn organizzazzjoni tal-arti (Verifikat minn Operabase)
Cantos by Syumak, Erb 07 Diċ 2016, Minn (2016/2017), Immexxi minn Semion Alexandrovsky,, Surmast Direttur Teodor Currentzis, Perm Tchaikovsky Opera and Ballet Theatre, Perm, Russia