Index to Short Biographies of Performers - O

Kate Oaks, Flute (USA)

Hélène Obadia, Mezzo-soprano (France)

Tanja Obalski, Soprano (Germany / The Netherlands)

Joji Obara, Bass (Japan) [Missing Biography]

Nobue Obara, Contralto (Japan) [Missing Biography]

Gerald O'Beirne, Tenor (England)

Betty Oberacker, Piano (USA)

Kammerchor Oberaspach (KCO), Chamber Choir (Germany)

Géza Oberfrank, Conductor (Hungary)

Russell Oberlin, Counter-tenor (USA)

Dorothee Oberlinger, Flute, Recorder (Germany)

Tamara Obermayr, Mezzo-soprano (Austria)

Andrea Oberparleiter, Soprano (Italy)

Annelies Oberschmied, Soprano (Austria-Italy)

Simon Oberst, Baritone (England)

Julia Obert, Soprano (Germany)

Luca Oberti, Harpsichord (Italy)

Elena Obraztsova, Mezzo-soprano (Russia)

Sébastien Obrecht, Tenor (France)

Clara O'Brien, Mezzo-soprano (USA)

Sylvia O'Brien, Soprano (Ireland)

Tim O'Brien, Baritone (USA)

Anne O'Byrne, Soprano (Ireland / USA)

Óbudai Danubia Zenekar (ODZ), Orchestra (Hungary)

Daniel Ochoa, Baritone (Germany)

Barbara Ochs, Mezzo-soprano (Germany)

Hartmut Ochs, Bass (Germany) [Missing Biography]

Jürgen Ochs, Tenor (Germany)

Siegfried Ochs, Conductor, Composer (Germany)

Klaus Ocker, Bass (Germany)

Brian Ocock, Choral Conductor (USA)

Matthew Ocone, Guitar (USA)

Charles O'Connell, Conductor (USA)

Andrew O'Connor, Bass-Baritone (Australia)

Daniel O'Connor, Baritone (New Zealand)

Rory O'Connor, Tenor UK

Octopus Ensemble, Vocal & Instrumental Ensemble (Belgium)

Tetsuya Odagawa, Bass (Japan)

Graciela Oddone, Soprano Argentina

Odeon-Ensemble München (OEM), Vocal & Instrumental Ensemble (Germany)

Paul O'Dette, Lute (USA)

Lothar Odinius, Tenor (Germany)

Aidan O'Donnell, Bass-Baritone (Australia)

John O'Donnell, Organ, Harpsichord, Choral Conductor (Australia)

Raymond O'Donnell, Choral Conductor, Organ (Ireland, UK)

Matthew O'Donovan, Bass (England)

Alexandra Oehler, Piano (Germany)

Mariëtte Oelderik, Soprano (The Netherlands)

Christiane Oelze, Soprano (Germany)

Bart Oenema, Baritone (The Netherland)

Julia Oesch, Mezzo-soprano (Germany)

Michelle Oesterle, Mezzo-soprano, Choral Conductor (USA)

Elisabeth Oets, Soprano (The Netherlands)

Johannes Oettel, Bass (Country ?) [Missing Biography]

Jan Patrick O'Farrell, Boy Soprano (Country ?) [Missing Biography]

Andrew von Oeyen, Piano (USA)

Maartje Offers, Contralto (The Netherlands)

L’Offrande Musicale, Vocal & Instrumental Ensemble (Belgium)

Jonathan Ofir, Violin, Conductor (Israel / Denmark)

Yoshitaka Ogasawara, Bass (Japan)

Asako Ogawa, Piano, Harpsichord (Japan / England)

John Ogdon, Piano (England)

Brenda Lucas Ogdon, Piano (England)

Jacqueline Ogeil, Harpsichord (Australia)

Jacques Ogg, Harpsichord, Fortepiano (The Netherlands)

Marina Ogii, Mezzo-soprano (Russia)

Thomas Ogilvie, Bass (Germany)

Toshimichi (Toshi) Ogita, Tenor (Japan / England)

Donald Oglesby, Choral Conductor (USA)

Alexei Ogrintchouk, Oboe (Russia)

María Ogueta, Mezzo-soprano (Spain)

{oh!} Orkiestra Historyczna, Orchestra (Poland)

Eun-Kyung Oh, Soprano (South Korea)

Hyun Jung Oh, Mezzo-soprano (Italy)

Moon Yung Oh, Tenor (South Korea / Germany)

Jimin Oh-Havenith, Piano (South Korea)

Rebecca O'Hanlon, Mezzo-soprano (Australia)

Michio O'Hara, Harpsichord, Horn, Conductor (Japan)

Stuart O'Hara, Bass-Baritone (England)

Ohio Chamber Orchestra (OCO), Chamber Orchestra (USA)

Kensuke Ohira, Conductor, Organ (Japan)

Yukie Ohkura, Soprano (Japan)

Oscar Ohlsen, Guitar, Lute (Chile)

Garrick Ohlsson, Piano (USA)

Emiko Ohmura, Conductor (Japan)

Takae Ohnishi, Harpsichord (Japan)

Kantorei der Kirchgemeinde Ohrdruf, Choir (Germany)

Anders Öhrwall, Conductor (Sweden)

Tetsuya Oi, Baritone (Japan)

Luka Oida, Piano (USA)

Yutaka Oikawa, Tenor (Japan)

David Oistrakh, Violin, Conductor (Ukraine, USSR)

Igor Oistrakh, Violin, Conductor (Ukraine, USSR)

Margot Oitzinger, Mezzo-soprano (Austria)

Hiromi Okada, Piano (Japan)

Naoko Okada, Soprano (Japan)

Chiyuki Okamura, Soprano (Japan)

Okayama Bach Kantaten Verein (OBKV), Choir (Japan) [Missing Biography]

Ayaka Oki, Soprano (Japan)

Oklahoma Ensembles: (USA):

Oklahoma Bach Choir & Orchestra, Chamber Choir & Period-instruments Ensemble (USA)

Oklahoma City University Early Music Ensemble, Early Music Instrumental Ensemble (USA)

Oklahoma Virtuosi Chamber Orchestra (OVCO), Chamber Orchestra (USA)

^^^^^

Mehmet Okonşar, Piano, Organ, Harpsichord (Turkey)

Ökumenischer Hochschulchor Würzburg (MCW), Choir (Germany)

Yasunori Okumura, Baritone (Japan)

Vikingur Ólafsson, Piano (Iceland)

Kálmán Oláh, Piano (Hungary)

Ölberg-Chor, Choir (Germany)

Jan Olberg, Choral Conductor (Germany)

Orchestra of the Old Fairfield Academy, Period-instrument Orchestra (USA)

Olde Friends Concert Artists (OFCA), Instrumental Ensemble (USA)

Kevin Oldham, Piano (USA)

Beatriz Oleaga, Mezzo-soprano (Spain)

Jack O'Leary, Bass (USA)

Piotr Olech, Counter-tenor (Poland)

Camilo Olguín, Bass-Baritone (Chile)i

Thomas Oliemans, Baritone (The Netherlands)

Grupo Vocal Olisipo (GVO), Vocal Ensemble (Portugal)

Andrea Oliva, Flute (Italy)

Josep-Ramon Olivé, Baritone (Spain)

Ariadne Oliveira, Mezzo-soprano (Brazil)

Daniele Oliveira, Contralto (Brazil)

Elmar Oliveira, Violin (USA)

Hugo Oliveira, Bass-Baritone (Portugal)

Nuno Oliveira, Piano, Harpsichord, Organ, Conductor (Portugal)

Tiago Oliveira, Tenor (Portugal)

Mercedes Olivera, Piano, Harpsichord (Uruguay)

Anaïs Oliveras, Soprano (Spain)

Magda Olivero, Soprano (Italy)

Jaylyn Olivo, Soprano (USA)

Bengt Ollén, Choral Conductor (Sweden)

Alistair Ollerenshaw, Bass-Baritone (England)

Sebastián Olmedo, Violin, Choral Conductor (Argentina)

Theo Olof, Violin (Germany / The Netherlands)

Per Olofson, Tenor (Sweden) [Missing Biography]

Kammerchor Olpe, Chamber Choir (Germany)

Guillaume Olry, Bass (France)

Anne-Kathryn Olsen, Soprano (USA)

Caroline Olsen, Mezzo-soprano (USA)

Eric Olsen, Piano, Organ, Choral Conductor (USA)

Stanford Olsen, Tenor (USA)

Matthew J. Olson, Conductor (USA)

Nathaniel Olson, Baritone (USA)

Åsa Olsson, Mezzo-soprano (Sweden)

Lawrence Olsworth-Peter, Tenor (England)

Maria Olszewska, Contralto (Germany)

Eva Oltiványi, Soprano (Switzerland)

Dwight Oltman, Conductor (USA)

Rebeca Olvera, Soprano Mexico

Albert van Ommen, Tenor (The Netherlands)

Jeanne Ommerlé, Soprano (USA)

Michael O'Neal, Choral Conductor (USA)

Sigrid Onégin, Contralto (Sweden / Germany)

Danni O'Neill, Soprano (England)

Verónica Onetto, Soprano (Argentina / France)

Tai Oney, Counter-tenor (USA)

Tish Oney, Soprano (USA)

Ensemble Ongaku Zammai, Instrumental Ensemble (Japan)

Lucian Onița, Baritone (Romania)

Anto Õnnis, Tenor (Estonia)

Akinobu Ôno, Tenor (Japan)

Kazuhiko Ono, Bass (Japan)

Enrico Onofri, Violin, Conductor (Italy)

Ingela Onstad, Soprano (USA)

Joshua Ooms, Baritone (USA)

Jacques van Oortmerssen, Organ (The Netherlands)

Ben van Oosten, Organ (The Netherlands)

Orkest van het Oosten, Symphony Orchestra (The Netherlands)

Nienke Oostenrijk, Soprano (The Netherlands)

Pauline Oostenrijk, Oboe, Oboe d’amore, English Horn (The Netherlands)

Wout Oosterkamp, Bass-Baritone (The Netherlands)

Stephen Oosting, Tenor (USA)

Jan Opalach, Bass (USA)

Ensemble Opalescences, Vocal & Instrumental Ensemble (France)

Margit Opawsky, Soprano (Austria)

Opella Musica, Vocal Ensemble (Germany)

Opera Fuoco, Orchestra (France)

Christiane Opfermann, Soprano (Germany) [Missing Biography]

Maximilian Opll, Choral Conductor (Austria)

Franco Oportus, Baritone (Chile)

Laura Oppedisano, Piano (Argentina)

Laurin Oppermann, Tenor, Harp (Germany)

Gerhard Oppitz, Piano (Germany)

Opus Ensembles:

Opus Posth Ensemble, Instrumental Ensemble (Russia)

Opus Vocale, Chamber Choir (Germany)

Opus X, Baroque Ensemble (Finland)

^^^^^

Talia Or, Soprano (Israel)

Sakari Oramo, Conductor (Finland)

Oratorio Ensembles:

Oratory Bach Ensemble, Chamber Choir & Period-instrument Orchestra (USA)

Oratorio Singers of Charlotte, Choir (USA)

Gelders Oratoriumkoor, Choir (Ther Netherlands) [Missing Biography]

Oratorienchor Karlsruhe der Christuskirche, Choir (Germany)

Oratorienchor Münster, Choir (Germany)

Oratorio Society of Estes Park (OSEP), Choir & Chamber Orchestra (USA)

Oratorio Society of New York, Choir & Orchestra (USA)

Oratorienchor Potsdam, Choir (Germany)

Westchester Oratorio Society, Choir (USA)

^^^^^

Marco Ordovás Guillén, Baritone (Spain / Germany)

Oregon Bach Collegium, Instrumental Ensemble (USA)

Philip O'Reilly, Bass-Baritone (England)

Cornelia Orendi, Contralto, Mezzo-soprano (Germany) [Missing Biography]

Gyula Orendt, Baritone (Hungary / Romania)

Orfeo / Orpheus Ensembles:

Orfeo 55, Instrumental Ensemble (France)

L'Orfeo Barockorchester, Baroque Orchestra (Austria)

Il Cantiere di Orfeo, Vocal & Instrumental Ensemble (Italy)

Orfeó Català, Choir (Spain)

Orfeo Orchestra, Orchestra (Hungary)

Orpheus Chamber Orchestra, Chamber Orchestra (USA)

Orpheus Chor München (OCM), Chamber Choir (Germany)

Orfeus Barock Stockholm (OBS), Baroque Instrumental Ensemble (Sweden)

Studio Orfelin, Choir & Orchestra (Serbia)

^^^^^

Luba Orgonasova, Soprano (Slovakia)

Oriana Consort, Chamber Choir (USA)

Christopher O'Riley, Piano (USA)

Orlando Ensembles:

Ensemble Orlando Fribourg, Vocal Ensemble (Switzerland)

Orlando Chamber Choir, London, Chamber Choir (England)

^^^^^

Jakub Józef Orliński, Counter-tenor (Poland)

Julian Orlishausen, Baritone (Germany)

Claudine Orloff, Piano (Belgium)

Alexander Orlov, Conductor (Russia)

Raimar Orlovsky, Violin (Germany)

Laurence Orlowski, Soprano (France)

Eugene Ormandy, Conductor (Hungary / USA)

Zimra Ornatt, Soprano (Israel)

Doris Ornstein, Harpsichord (USA)

Martin Oro, Counter-tenor Argentina

Paul Oros, Bass (Canada)

Rodrigo Orrego, Tenor (Chile)

Luigi Orsini, Tenor (The Netherlands)

Francesc Ortega, Baritone (Spain)

Miguel Ángel Ortega Bañales, Tenor (Mexico / USA)

Ramón Ortega Quero, Oboe (Spain)

Camille Ortiz, Soprano (Puerto Rico / USA)

Erwin Ortner, Choral Conductor (Austria)

Ellen Osborn, Soprano (Country ?) [Missing Biography]

Katherine Osborne, Mezzo-soprano (USA)

Lisa Oscarsson, Organ (Sweden)

Polina Osetinskaya, Piano (Russia)

Laura Osgood, Soprano (USA)

Hiroshi Oshima, Tenor (Japan) [Missing Biography]

Kumiko Oshita, Soprano (Japan)

Oslo Ensembles (Norway)

Oslo Barokkanerne, Instrumental & Vocal Ensemble (Norway)

Oslo Circles, Baroque Instrumental Ensemble (Norway)

Oslo Philharmonic Orchestra, Symphony Orchestra (Norway)

^^^^^

Cecilia Osmond, Soprano (Canada)

Gymnasium Carolinum Osnabrück Chor, Choir (Germany)

Marienkantorei Osnabrück, Choir (Germany)

Clara Osowski, Mezzo-soprano (USA)

Thomas Ospital, Organ (France)

Ivan Ostapovych, Conductor (Ukraine)

Christoph Dominik Ostendorf, Choral Conductor, Organ (Germany)

John Ostendorf, Bass-Baritone (USA)

Rainer Oster, Conductor, Organ, Harpsichord (Germany)

Luzia Ostermann, Mezzo-soprano (Germany)

Stefan Östersjö, Guitar (Sweden)

Ostfälisches Vokalensemble (OVE), Vocal Ensemble (Germany)

Alexander Osthelder, Counter-tenor (Country ?) [Missing Biography]

Sofia Östling, Organ, Choral Conductor (Sweden)

Arnold Östman, Conductor (Sweden)

Ostrobothnian Chamber Orchestra (OCO), Chamber Orchestra (Finland)

Maria Ostroukhova, Mezzo-soprano (Soprano)

Marius Ostrowski, Piano (Germany / England)

Avi Ostrowsky, Conductor (Israel)

Hermann Oswald, Tenor (Germany)

Peter Oswald, Tenor (Country ?) [Missing Biography]

Andrei Otean, Baritone (Moldova)

Marcelo Otegui, Bass (Uruguay)

Ottawa Ensembles (Ontario, Canada):

Ottawa Bach Choir (OBC), Choir (Canada)

Ottawa Symphony Orchestra (OSO), Symphony Orchestra (Canada)

^^^^^

James Ottaway, Bass (England)

Nienke Otten, Soprano (The Netherlands)

Anne Sofie (or Sophie) von Otter, Mezzo-soprano (Sweden)

Rogier van Otterloo, Conductor (The Netherlands)

Jerold D. Ottley, Choral Conductor (USA)

JoAnn Ottley, Soprano (USA)

Aisha Otto, Mezzo-soprano (Germany)

Gudrun Sidonie Otto, Soprano (Germany)

Hans Otto, Organ (Germany)

Ilse-Christine Otto, Soprano (Germany)

Lisa Otto, Soprano (Germany)

Ralf Otto, Conductor (Germany)

Wolfram Otto, Choral Conductor, Organ (Germany) [Missing Biography]

Florin Cezar Ouatu, Counter-tenor, Piano (Romania)

Oulun Kamariorkesteri, Chamber Orchesra (Finland)

Rebecca Outram, Soprano (England)

Jeremy Ovenden, Tenor (England)

Michael Overbury, Organ, Harpsichord (England)

Kirsten Overdahl, Mezzo-soprano (USA)

Maurice Overholt, Bass (USA)

Hildegard Van Overstraeten, Soprano (Belgium) [Missing Biography]

Chloë Owen, Soprano (USA)

Emily Owen, Soprano (England)

Lynn Rasmussen Owen, Soprano (USA)

Eric Owens, Bass-Baritone (USA)

Margaret Owens, Oboe (USA)

John Owings, Piano (USA)

Martin Oxenham, Baritone (England)

Oxford Ensembles (England):

Oxford Bach Soloists, Baroque Vocal & Instrumental Ensemble (England)

Oxford Camerata, Vocal Ensemble (England)

Christ Church Cathedral Choir, Oxford (CCCC), Choir (England)

Choir of New College, Oxford (CNCO), Choir (England)
- Soloists of the Choir of New College Oxford

Choir of Queen's College Oxford, Choir (England)

Schola Cantorum of Oxford, Chamber Choir (England)

Choir of Somerville College, Oxford, Choir (England)

Musicians of the Dreaming Spires, Oxford (MDS), Instrumental Ensemble (England)

Oxford Philharmonic Orchestra, Symphony Orchestra (England)

Oxford Philomusica, Symphony Orchestra (England)

^^^^^

James Oxley, Tenor (England)

Joshua Oxley, Tenor (Australia)

Pablo Oyanedel, Baritone (Chile)

Seiji Ozawa, Conductor (China / Japan)

Stephen Ozcomert, Bass (USA)

Burak Ozdemir, Bassoon, Conductor (Turkey)

Doğukan Özkan, Bass-Baritone (Turkey)

Mehmet Alp Özkazanç, Tenor (Turkey)

Ayşe Özmen, Soprano (Turkey)

Prepared by Aryeh Oron (January 2001 - July 2025)