As Juliette in Roméo et Juliette:
"As Juliette, soprano Joanna Mongiardo was introduced with a series of arpeggios that had her soaring into the coloratura range and back. Mongiardo has a rich, vibrant voice that's full and powerful without unnecessary flutter. She is what all sopranos should be"
-The Capital Times, November 22-23, 2003
"Mongiardo has a solid lyric soprano voice, with a hint of darkness and with assured control even at the top"
-Wisconsin State Journal, November 22, 2003
"Joanna Mongiardo's strong, ripe tone traced effectively Juliet's passage from girl to woman. Together or apart, they were also visually ideal for their roles"
-Isthmus, November 26, 2003
As Susanna in Le Nozze di Figaro:
"Joanna Mongiardo, who performs the huge role of Susanna, the chambermaid 'engaged' to Figaro, becomes more adorable as the opera gains momentum. She is a very good actress as well as a strong, hardworking soprano. She is irresistible with her nose crinkling and quicksilver brain ticking away faster than anyone else's. When she and the countess write a letter to the count in the third act during the 'Sull'aria' duet, I could have listened all night"
-The Columbian, October 1, 2003
"Susanna is the key, and Joanna Mongiardo matched singers around her all night. Besides being quick on her feet and agile of voice, she was tireless in her lengthy recitatives (sung speech) through to her last-act aria, the sensitively phrased 'Deh vieni, non tardar'"
-The Oregonian, September 23, 2003