On January 29, 2025, Akis Kalmoukis performed in È aperto a tutti quanti, an operatic evening at the Dimitris Mitropoulos Hall of the Athens Concert Hall. The production, part of a masterclass led by internationally acclaimed baritone Dimitris Tiliakos and organized by the Friends of Music Society, featured highlights from Mozart's Da Ponte trilogy: The Marriage of Figaro, Don Giovanni, and Così fan tutte. Akis presented various excerpts from the role of Don Ottavio in Don Giovanni, showcasing his lyrical finesse, elegant phrasing, and command of the Mozartian style. His interpretation added depth and emotional nuance to the performance, making it a standout moment in an evening dedicated to the brilliance of Mozart’s operatic legacy.