| CD-Nr.: | Track: | Komponist: | Titel: | Solist: | Kor: | Orkester | Dirigent: |
| 01696 | 2 | Ó Riada, Séan | Hercules Dux Ferariae: Nomos 1 | Ulster Orchestra | Celso Antunes |
| 00471 | 4 | O'Connor, Mark | Violin Concerto no. 6 'Old Brass' | Mark O'Connor | Academy of St Martin in the Fields | Kenneth Sillito |
| 01540 | 4 | O'Neill, Norman | La Belle Dame Sans Merci | Garry Magee | BBC Concert Orchestra | Vernon Handley |
| 00941 | 4 | O'Neill, Norman | The Blue Bird - incidental music | BBC Concert Orchestra | Vernon Handley |
| 02362 | 6 | Oboechov, Nicolaj | Le troisieme et dernier testament | Krüs, Rüping, Lamm, Beekman | Groot Omroepkoor | Radio Filharmonisch Orkest | Reinbert de Leeuw |
| 01852 | 8 | Obst, Michael | espaces sonores für Bläserquintett und Orchester | MDR Bläserquintett | MDR Sinfonieorchester | Rolf Gupta |
| 02456 | 9 | Ockeghem, Johannes | Intermerata Dei Mater ork.: Richard Egarr | Vlaams Radio Orkest | Richard Egarr |
| 01461 | 5 | Ockeghem, Johannes | Ut Heremia Solus arr Harrison Birtwistle | Esbjerg Ensemble |
| 01027 | 4 | Odak, Krsto | Adriatic Symphony Op. 36 | Croatian Radio-Television Symphony Orchestra | Baldo Podic |
| 02221 | 6 | Odeh-Tamimi, Samir | Gdadrója | van de Hart, Motseri, Burghofer | Hilversum Radio Chamber Orchestra | Peter Eötvös |
| 01345 | 2 | Odenhall, Staffan | Altsaxofonkonsert, "Flyktingen" (2001) | Christer Johnsson | Stockholm Session Strings | Rune Bergman |
| 01114 | 6 | Odenhall, Staffan | Konsert för trumpet, piano och orkester | Peter Asplund, Jacob Karlzon | Stockholm Session Strings | Rune Bergman |
| 02384 | 6 | Oehring, Helmut | Verlorenwasser | Kammer, Wilkendorff, Bauer, Ottersberg | Berlins Døvekor | Bayersk Radios Symfoniorkester | Ingo Metzmacher |
| 01618 | 4 | Oehring, Helmut/Shiphorst Iris ter | Polaroids | Schönfeld, Raunig, Hildebrandt | Ensemble Modern | Jörg Wyttenbach |
| 01403 | 2 | Oehring, Hemuth | Kommander Kobayashi singt (unter fremde Sternen) | NOVOFLOT | Vicente Larrañaga |
| 02483 | 10 | Offenbach, Jacques | Ouvertüre | Les Musiciens du Louvre | Marc Minkowski |
| 02323 | 4 | Oh, Seung-Ah | Concerto fo Consonant Chord Catalogue | Maarten van Veen | DoelenEnsemble | Arie van Beek |
| 02323 | 6 | Oh, Seung-Ah | Unsung Equilibrium | Orkest de Volharding | Jussi Jaatinen |
| 01814 | 5 | Ohguri, Hiroshi | Fantasy on Osaka Folk Tunes | Osaka Philharmonic Orchestra | Tatsuya Shimono |
| 01814 | 6 | Ohguri, Hiroshi | Legend for Orchestra | Osaka Philharmonic Orchestra | Tatsuya Shimono |
| 01814 | 7 | Ohguri, Hiroshi | Rhapsody on Osaka Nursery Rhymes | Osaka Philharmonic Orchestra | Tatsuya Shimono |
| 01814 | 4 | Ohguri, Hiroshi | Violin Concerto | Kazuhiro Takagi | Osaka Philharmonic Orchestra | Tatsuya Shimono |
| 01783 | 2 | Öhrwall, Anders | Mariamusik | Lundblad, Olsson | Radiokören | Sandberg, Bergström, Ericsson, Bergstrand, Asikainen | Anders Öhrwall |
| 00431 | 4 | Oja, Eduard | Skönheten | Estlands Symfoniorkester | Arvo Volmer |
| 02308 | 3 | Olafsson, Kjartan | Sextet II | Caput Ensemble |
| 01861 | 12 | Oláh, Tiberiu | Mihai Viteazui - Symphonic Suite | Roumanian National Orchestra | Horia Andreescu |
| 00092 | 3 | Olesen, Thomas Agerfeldt | All As One | Athelas Sinfonietta | Rolf Gupta |
| 01111 | 4 | Olesen, Thomas Agerfeldt | Klaverkoncert "Steinfeld" | Rolf Hind | Aarhus Symfoniorkester | Michael Christie |
| 01484 | 4 | Olesen, Thomas Agerfeldt | Königswinter | De fem Basisensembler | Frans Rasmussen |
| 02110 | 2 | Oliveros, Pauline | From Unknown Silences | The Orchestra of the S.E.M | Petr Kotik |
| 01292 | 2 | Olofsson, Kent | Fascia for charango, el-midigitar, sampler and orch. | Stefan Östersjö | Bavarian Radio Symphony Orchestra | Lothar Zagrosek |
| 00094 | 6 | Olofsson, Kent | Gaea | Ars nova-ensemblen |
| 01151 | 8 | Olofsson, Kent | T | Ars Nova | Russell Harris |
| 00750 | 1 | Olofsson, Kent | Tarpeian Rock | Ars Nova |
| 01247 | 2 | Olofsson, Kent | The Bells | Radiokören | James Wood |
| 01293 | 2 | Olofsson, Olov | 700 dagar, ett oratorium om utbrändthet | Wärnfeldt, Engström, Merhammar, Pettersson... | Cantica Nova, Opera Viva | Stockholms läns blåsarsymfoniker | Jonas Dominique |
| 01280 | 8 | Olsen, James | Quiet Enjoyment | Deutsches Sinfonie-Orchester Berlin | George Benjamin |
| 01456 | 6 | Olsen, Morten | Ictus | Esbjerg Ensemble | Roger Montgomery |
| 00240 | 6 | Olsson, Otto | Symfoni i g-moll | Sveriges Radios Symfoniorkester | Manfred Honeck |
| 00412 | 2 | Olsson, Otto | Te Deum | Radiokören, Eric Ericsons kammarkör | Sveriges Radios Symfoniorkester | Tobias Ringborg |
| 02484 | 8 | Omer, Michael | The Rages of the Ages | London Mozart Players | Alexander Shelley |
| 02342 | 6 | Oña, Erik | Lokaler Wiederstand für Klavier und 12 Streicher | Helena Bugallo | Ensemble Resonanz | Sian Edwards |
| 02358 | 6 | Onna, Peter van | The Gothic Arch | Ensemble Resonnanz | Jonathan Stockhammar |
| 01372 | 2 | Onna, Peter van | Wheatfield with Lark (1997) | Bart van de Roer | Nederlands Balle Orkest | Zsolt Nagy |
| 01135 | 4 | Oorebeek, Christina Viola | Fulgura Frango | Marco Blaauw | Doelen Ensemble | Arie van Beek |
| 01262 | 2 | Oosten, Roel van | Ostinazione | Orkest De Volharding | Jurjen Hempel |
| 01316 | 6 | Oosten, Roel van | Pianoconcert | Guus Janssen | Philips Symfonie Orkest | Jules van Hessen |
| 01754 | 2 | Opienski, Henryk | Zygmunt August i Barbara, op. 13 | Orkiestra Polskiego Radia w Krakowie | Aleksander Tracz |
| 00055 | 3 | Orff, Carl | Carmina Burana - Eingangschor | Münchner Philharmoniker | Sergiu Celibidache |
| 01072 | 6 | Orff, Carl | Sirmio ur Concento di voci | Jan Strömberg, Johan Pejler | Radiokören | Anders Eby |
| 00817 | 4 | Orr, Robin | Symphony in One Movement | BBC Scottish Symphony Orchestra | Douglas Boyd |
| 00440 | 6 | Orrego-Salas, Juan | Serenata concertante | Orquesta Sinfónica de RTVE | Adrian Leaper |
| 01304 | 8 | Orsomando, Giovanni | Banda sucre | Koninklijke Harmonie van Thorn | Jan Cober |
| 01974 | 2 | Ortega-Miranda, Chañaral | Q'inti | Luxembourg Sinfonietta | Marcel Wengler |
| 01466 | 4 | Orthel, Léon | Scherzo No. 2 | Het Brabants Orkest | Marc Soustrot |
| 02321 | 2 | Orthel, Leon | Symfonie nr. 2 opus 18 | Residentie Orkest | Willem van Otterloo |
| 00988 | 5 | Osborne, Nigel | Alba | Linda Hirst | London Sinfonietta | Peter Eötvös |
| 01222 | 6 | Osborne, Nigel | I am Goya | City of London Sinfonia | Richard Hickox |
| 01006 | 6 | Osborne, Nigel | Zansa | City of London Sinfonia | Howard Williams |
| 01774 | 2 | Osborne, Nigel | Zansa | Scottish Chamber Orchestra | Garry Walker |
| 00297 | 4 | Österling, Fredrik | Le vin des amants | Maria Höglind | KammarensembleN | B Tommy Andersson |
| 02258 | 6 | Ostrcil, Otakar | Kreuzweg op. 24 | Tschechische Philharmonie Prag | Zdenek Mácal |
| 02080 | 6 | Ostrcil, Ottokar | Summer, opus 23 | Prague Radio Symphony Orchestra | Jakub Hrusa |
| 01446 | 6 | Osvald, Miloslav | Concerto grosso | Plzenský rozhlasový orchestr | Vít Micka |
| 01491 | 2 | Otterloo, Willem van | Derde Suite | Radio Filharmonisch Orkest | Marc Soustrot |