"The phenomenal, agile, flourishing voice of Hillebrand in the psalm, made into a pure hormone, in the opening of which she - whether staccato or legato - was able to show off her elegance supported by a splendid breathing technique, was nothing other than a great concentration of feelings of happiness. (...)"
"Nikola Hillebrand's Konstanze was the undisputed queen of the soloists. Her coloratura was unwavering and as if it was the simplest thing in the world. Added to this was the flexibility and brilliance of her voice, which knows no boundaries, and her charisma. With a flawlessness that seems so natural, you won't hear the difficult Martern aria sung like this anywhere else soon."
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