Opera News calls Kallor a “rising star in the music world” with “a singular compositional voice”
"Here [in Sketches from Frankenstein], as in The Tell-Tale Heart, Kallor achieved a perfect balance of text and music. The libretto hued quite closely to Mary Shelly’s original text, serving as a welcome reminder of her wonderful prose. Kallor’s music is a most interesting synthesis of elements of classical and jazz, galvanized into a singular compositional voice. There is plenty of heartfelt lyricism in his music, yet also enough complexity to keep it intriguing for those of us who seek more."
–Arlo McKinnon, Opera News