Her secret is in her ability to transfer to the musical plane the suffering of the character she plays, the nostalgic longing for lost happiness, the anxious fluctuation between hope and despair, between pride and supplication, between irony and generosity, which in the end dissolve into a superhuman inner pain. The most diverse and opposite of sentiments, cruel deceptions, ambitious desires, burning tenderness, grievous sacrifices, all the torments of the heart, acquire in her singing that mysterious truth, I would like to say, that psychological sonority, which is the primary attraction of opera.