 | Oliver Schnyder - The Beethoven Project - The 5 Piano Concertos & 4 Overtures Klasyka |  17.11.2017 |
 | Oliver Schnyder Trio - Beethoven: The Piano Trios Klasyka | 22.09.2017 |
 | Olivia Belli - Intermundia Klasyka | 23.02.2024 |
 | Olivia Belli - Sol Novo Klasyka | 15.10.2021 |
 | Olivier Fortin - Bach & Bernier: Routes Du Café Klasyka | 13.09.2019 |
 | Olivier Latry - In Spiritum Klasyka | 02.07.2013 |
 | Olivier Latry - Trois Siecles D'Orgue Klasyka | 14.05.2013 |
 | Olivier Latry - Voyages Klasyka | 20.01.2017 |
 | Olivier Opdebeek - Villard: Tenebrae Klasyka | 05.02.2021 |
 | Olivier Schneebeli - Robert Grand Motets Klasyka | 12.11.2021 |
 | Olli Mustonen - Olli Mustonen: The RCA Recordings Klasyka | 27.10.2017 |
 | ON-OFF - Le Nouveau Son De L'Accordeon Klasyka | 05.02.2021 |
 | Ophélie Gaillard - Cellopera Klasyka | 19.03.2021 |
 | Opium String Quartet - Moss: Chagall For Strings Klasyka | 19.11.2013 |
 | ORA Singers - Sanctissima: Vespers and Benediction for the Feast of the Assumption of the Virgin Mary Klasyka | 04.08.2023 |