Der argentinisch-italienische Tenor Rolando Guy wurde in Buenos Aires geboren, wo er am Nationalen Konservatorium studierte.

Er arbeitete privat mit Luis Bragato, Ricardo Ortale, Garbis Adiamanian, Gustavo López Manzitti, Darío Schmunck und Víctor Torres — allesamt Sänger und Lehrer am Teatro Colón — und erarbeitete sein Opernrepertoire mit Dante Ranieri, Susana Cardonnet, Rozita Zozoulia (Russland) und Marcelo Ayub.

In einer früheren Phase seiner künstlerischen Entwicklung erhielt er außerdem Coachings bei Jack Li Vigni in New York und bei dem Tenor Francesco Anile in Rom. 2017 nahm er an der renommierten Javier-Camarena-Meisterklasse in Buenos Aires teil.

Based in Berlin since 2019, he studied with Maestro Reiner Goldberg and Uwe Griem, and currently continues to develop his technique and interpretation with Maestro Stephan von Cron Catalano, Austrian conductor and violinist. In 2025, he performed the role of Zweiter Fremder in Der Vetter aus Dingsda (Eduard Künneke) at Kammeroper Frankfurt under the direction of Stanislav Rosenberg, and in 2023 sang Tamino in Die Zauberflöte with Opernwerkstatt am Rhein. He has appeared as a soloist in the Apollo Saal of the Staatsoper Berlin in private events with Operadinners, with whom he has collaborated on several occasions, including performances in London in 2025. He has also performed with the ensemble Die Goldvögel in Berlin and Copenhagen, and as soloist with the Diplomatic Choir of Berlin at the Berliner Dom, the Federal Foreign Office, and Notre-Dame in Strasbourg. He has given Lieder recitals featuring works by Schubert, Strauss, Rachmaninov, and Liszt with pianist Marcelo Ayub.