William Guanbo Su was riveting as the lascivious evangelist Olin Blitch, demonic in the showy Revival Scene, but if anything, more impressive in his subsequent confrontation with Susannah, where, before he rapes her, Blitch tells her: “I’m a lonely man.” At that moment, Su brought ambiguity and shading to his portrayal: the preacher remained a low life, but one whose character was rooted in deep-seated vulnerability.
— Opera News
In arias from Handel’s ‘Orlando’ and Bellini’s ‘La Sonnambula,’ he displayed musical taste, honest execution of Handelian ornaments and bel canto filigree, and a solid voice.
— The New York Times
The vocal standout was William Guanbo Su as Colline. Rarely has the little overcoat aria been better sung. This is a truly stellar voice.
— EDGE Media Network
William Guanbo Su made a huge impression debuting as Don Basilio.
The voice is much fuller and lusher than what is accustomed in this role, powerful but not thunderous, and overwhelming the listener with its power and sumptuousness. His acting was appropriately varied: at once comical and serious, mugging when appropriate, grabbing the viewer’s attention whenever he was onstage.
— Broadway World