(Photo: Roberto Ricci) I first heard Vasilisa Berzhanskaya as Rosina in a 2022 Florence production of “Il barbiere di Siviglia.” For the first time, I wasn’t sure if it was the standard version with a mezzo Rosina, or the less frequently performed soprano version. While the timbre was distinctly mezzo, the dazzling coloratura was more soprano than mezzo. Fast forward {…}