| Jan Antonín Losy | 1 | 1977 |
| Concentus Musicus Wien | 24 | 1967 - 1997 |
| Concentus Musicus Wien, Leonhardt-Consort | 2 | 1973 - 1991 |
| Concentus Musicus Wien, Nikolaus Harnoncourt | 19 | 1967 - 1998 |
| Concert Arts Chamber Orchestra | 1 | 1957 |
| The Concert Arts Chamber Orchestra | 1 | |
| Concert Arts Orchestra | 4 | 1954 - 1957 |
| The Concert Arts Orchestra | 6 | 1954 - 1961 |
| Concert Arts Symphony Orchestra | 6 | 1958 - 1995 |
| Concert Arts Symphony Orchestra, Erich Leinsdorf | 1 | 1995 |
| The Concert Arts Symphony Orchestra | 2 | 1958 |
| Concert Arts Symphony, Erich Leinsdorf | 2 | 1960 - 1967 |
| Concert Band Of The Hungarian State Railways, Pécs | 1 | 1997 |
| Concert Group Of The Schola Cantorum Basilensis | 1 | |
| Concert Hall Chamber Orchestra | 4 | 1962 - 1963 |
| Concert Hall Symphony Orchestra | 1 | |
| Concert Hall Symphony Orchestra, Henry Swoboda | 1 | |
| Concert Orchestra | 1 | 1940 |
| Concertgebouw Chamber Orchestra | 4 | 1985 - 2009 |
| Concertgebouw Orchester Amsterdam | 6 | |
| Concertgebouw Orchester Amsterdam, Bernard Haitink | 3 | 1972 |
| Concertgebouw Orchester, Amsterdam | 5 | 1967 - 1979 |
| Concertgebouw Orchester Amsterdam, George Szell | 1 | |
| The Concertgebouw Orchestra (Amsterdam) | 3 | 1958 - 1959 |
| Concertgebouw Orchestra Amsterdam | 189 | 1930 - 2017 |
| Concertgebouw Orchestra Amsterdam, BBC Symphony Orchestra | 1 | |
| Concertgebouw Orchestra Amsterdam, Bernard Haitink | 19 | 1969 - 1988 |
| Concertgebouw Orchestra Amsterdam, Carlo Zecchi | 1 | |
| Concertgebouw Orchestra Amsterdam, Edo de Waart | 1 | 1983 |
| Concertgebouw Orchestra Amsterdam, Eduard Van Beinum | 19 | 1952 - 2017 |
| Concertgebouw Orchestra Amsterdam, Erich Kleiber | 2 | |
| Concertgebouw Orchestra Amsterdam, Eugen Jochum | 1 | 1971 |
| Concertgebouw Orchestra Amsterdam, George Szell | 3 | 1961 |
| Concertgebouw Orchestra Amsterdam, Josef Krips | 1 | 1989 |
| Concertgebouw Orchestra Amsterdam, Karl Bohm | 2 | 1958 - 1995 |
| Concertgebouw Orchestra Amsterdam, Kirill Kondrashin | 1 | |
| Concertgebouw Orchestra Amsterdam, Netherlands Radio Chorus | 1 | |
| Concertgebouw Orchestra Amsterdam, Paul Van Kempen | 2 | 1960 - 1988 |
| Concertgebouw Orchestra Amsterdam, Royal Male Choir "Apollo" | 1 | |
| Concertgebouw Orchestra Amsterdam, Willem Mengelberg | 2 | 1985 - 1995 |
| Concertgebouw Orchestra Amsterdam, Igor Markevitch | 2 | 1980 |
| Concertgebouw Orchestra Of Amsterdam, Eduard Van Beinum | 8 | 1952 - 2017 |
| Concertgebouw Orchestra Of Amsterdam, George Szell | 1 | 1980 |
| Steven Staryk, The Concertgebouw Orchestra Of Amsterdam, Georg Solti | 1 | 1961 |
| Sylvia Stahlman, The Concertgebouw Orchestra Of Amsterdam, Georg Solti | 1 | 1961 |
| The Concertgebouw Orchestra Of Amsterdam, Georg Solti | 1 | 1961 |
| Concertgebouw Orchestra Of Amsterdam, Igor Markevitch | 1 | 1978 |
| Concertgebouw Orchestra Of Amsterdam, Jean Fournet | 1 | 1978 |
| Concertgebouw Orchestra Of Amsterdam, Paul Van Kempen | 3 | 1952 - 1956 |
| The Concertgebouw Orchestra Of Amsterdam | 7 | 1949 - 1970 |
| The Concertgebouw Orchestra, Amsterdam | 5 | 1958 - 1960 |
| The Concertgebouw Orchestra, Amsterdam, Wolfgang Sawallisch | 1 | |
| Concertgebouw Orchestra, Bernard Haitink | 5 | 1984 - 1990 |
| Concertgebouw Orchestra, Nikolaus Harnoncourt | 1 | 1981 |
| Concertgebouw Orchestra, Otto Klemperer | 1 | |
| Concertgebouw Orchestra, Riccardo Chailly | 2 | 1988 |
| Concertgebouw Orchestra Amsterdam, Sir Colin Davis | 1 | 1984 |
| Concertgebouw Orkest | 1 | 1982 |
| Concertgebouw-Orchester Amsterdam | 1 | |
| Concertgebouw-Orchester Amsterdam, Bernard Haitink | 3 | 1965 - 1971 |
| Concertgebouw-Orchester Amsterdam, Eduard Van Beinum | 1 | |
| Concertgebouw-Orchester Amsterdam, Igor Markewitch | 1 | 1971 |
| Concertgebouw-Orchester Amsterdam, Jean Fournet | 1 | |
| Concertgebouw-Orchester, Amsterdam | 3 | 1968 - 1981 |
| Concertgebouw-Orchester, Amsterdam, Bernard Haitink | 3 | 1974 - 1982 |
| Concertgebouw-Orchester, Amsterdam, Eugen Jochum | 1 | 1971 |
| Concertgebouw-Orchester, Amsterdam, Niederländischer Rundfunkchor, Bernard Haitink | 1 | 1979 |
| Concertgebouw-Orkest, Bernard Haitink | 1 | |
| Concertgebouworkest | 6 | 1962 - 1985 |
| Concertgebouworkest Amsterdam, Leonard Bernstein | 1 | 1989 |
| Concertgebouworkest, Neville Marriner | 1 | 1978 |
| Concerto Amsterdam | 1 | 1974 |
| Concerto Armonico | 2 | 1989 |
| Concerto Caledonia | 1 | 1999 |
| Concerto Italiano | 1 | |
| Concerto Italiano, Rinaldo Alessandrini | 1 | |
| Concerto Köln | 6 | 1995 - 2016 |
| Concerto Palatino | 1 | |
| Concerto Vocale | 3 | 1983 - 1992 |
| Concerto Vocale, René Jacobs | 1 | 1990 |
| Concerts Des Lamoureux, Roberto Benzi | 1 | 1988 |
| Conchita Supervia | 4 | 2000 |
| Concilium Musicum Wien | 2 | 1990 |
| Concilium Musicum Wien, Paul Angerer | 2 | 1990 - 1994 |
| The Concord String Quartet | 1 | 1973 |
| Conforti | 1 | |
| Conjunto Instrumental "Pro Musica Hispaniarum" | 1 | |
| Conlon Nancarrow | 3 | 1995 - 2006 |
| Conor Hastings | 1 | 2017 |
| Conrad Klemm | 1 | |
| Konrad Kocher | 2 | 1966 - 2016 |
| Conrad Marshall | 1 | 1999 |
| Conrad Paumann | 3 | 1973 - 2005 |
| Conrad Steinmann | 1 | 1982 |
| Conradin Kreutzer | 5 | 1959 - 1996 |
| Consolatrix Afflictorum Choir | 1 | 1958 |
| The Consolatrix Afflictorum Choir | 1 | 1960 |
| Consort Of London | 2 | 1990 |
| The Consort Of Musicke, Anthony Rooley | 9 | 1977 - 1996 |
| The Consort Of Musicke | 10 | 1977 - 1996 |
| Consortium Carissimi | 1 | |
| Consortium Carissimi, Vittorio Zanon | 1 | 2001 |
| Consortium Classicum | 1 | 1975 |
| Consortium Musicum | 8 | 1966 - 1990 |
| Consortium Musicum / Fritz Lehan | 1 | |
| Consortium Musicum, Fritz Lehan | 1 | |
| Consortium Musicum, Wolfgang Gönnenwein | 2 | 1966 |
| Constance Keene | 2 | |
| Constant Lambert | 14 | 1929 - 1992 |
| The Constant Lambert String Orchestra | 2 | 1937 - 2009 |
| Constantin Silvestri | 20 | 1957 - 2001 |
| Constantin Silvestri, Paul Kletzki | 1 | 1974 |
| Constantin Zaharia | 1 | 1991 |
| Constantine Callinicos | 22 | 1950 - 1995 |
| Constantine Orbelian | 1 | 2001 |
| Constantino Callinicos | 1 | |
| Constantino Greco | 1 | 1987 |
| Constanzo Festa | 1 | |
| Consuelo Velázquez | 1 | 1991 |
| The Contemporary Chamber Ensemble, Arthur Weisberg | 3 | 1972 - 1974 |
| The Contemporary Chamber Ensemble | 6 | 1971 - 1976 |
| The Continental Symphony Orchestra | 2 | 1959 - 1960 |
| Contrapunctus | 1 | 2021 |
| Conventus | 1 | 2003 |
| Copenhagen Boys' Choir | 1 | 1999 |
| The Copenhagen Boys' Choir | 1 | |
| Copenhagen Philharmonic | 1 | 1981 |
| Copenhagen Royal Chapel Choir | 1 | |
| Copenhagen Symphony Orchestra | 2 | 1987 |
| Copenhagen Symphony Orchestra, Lavard Friisholm | 3 | 1964 - 1987 |
| Cor Anglaise | 1 | 1984 |
| Cor de Groot | 11 | 1953 - 2007 |
| Cor De Groot [Piano] With The Vienna Symphony Orchestra Conducted By Willem Van Otterloo | 1 | 1958 |
| Cor de Groot, The Hague Philharmonic Orchestra, Willem van Otterloo | 3 | 1954 - 1956 |
| Cor de Groot, Hilversum Radio Philharmonic Orchestra, Willem Van Otterloo | 1 | 1956 |
| Cor de Groot, Vienna Symphony Orchestra, Willem Van Otterloo | 3 | 1953 - 1958 |
| Cor Fuhler | 1 | 1998 |
| Cora Canne Meyer | 1 | |
| Coral Sinfónico De Portugal | 1 | 2013 |
| Cord Garben | 1 | |
| Cordovento | 1 | 2009 |
| Corelli Chamber Orchestra | 2 | 1987 |
| Corinne Curry | 1 | |
| Corinne Curry, Luise Vosgerchian | 1 | 1963 |
| Corinne Curry, The Boston Chamber Ensemble, Harold Farberman | 1 | 1963 |
| Corinthian Orchestra | 1 | |
| The Corinthian Singers, Dean Patterson | 1 | 1978 |
| The Corinthian Singers | 1 | |
| Corky Siegel | 1 | 1981 |
| Cornel-Trio | 2 | 1954 |
| Cornelia Kallisch | 1 | |
| Cornelis de Bondt | 2 | 1996 - 2001 |
| Corneliu Dan Georgescu | 1 | |
| Cornelius Freundt | 1 | |
| Cornelius Hauptmann | 3 | 1990 - 1991 |
| Cornelius Hermann | 1 | 1991 |
| Cornelis Van Dijk | 3 | 1955 - 1958 |
| Cornell MacNeil | 7 | 1958 - 1976 |
| Cornell MacNeil / Nicolai Gedda / Reri Grist / Anna Di Stasio / Alfredo Giacomotti / Chor Und Orchester Der Oper Rom | 1 | |
| Coro & Orchestra Del Teatro Alla Scala, Georges Prêtre | 1 | 1984 |
| Coro and Orchestra del Teatro alla Scala | 1 | |
| Coro And Orchestra Del Teatro Alla Scala, Georges Prêtre | 1 | 1984 |
| Coro Cantores De Madrid | 1 | 1962 |
| Coro Croz Corona / Trienten Bergsteigerchor | 1 | 1983 |
| Coro de monjes del Monasterio Benedictino de Santa Domingo de Silos | 3 | 1994 |
| Coro Del Teatro Alla Scala | 1 | 1991 |
| Coro Del Teatro Alla Scala, Milano | 1 | 1986 |
| Coro Del Teatro Communale di Bologna | 1 | |
| Coro della Radiotelevisione Svizzera | 1 | |
| Coro Di Torino Della RAI | 1 | 2009 |
| Coro Di Torino Della RAI, Orchestra Sinfonica Nazionele Della Di Torino, André Cluytens | 1 | 2009 |
| Coro e Orchestra del Maggio Musicale Fiorentino | 1 | |
| Coro E Orchestra Del Teatro Alla Scala | 4 | 1981 - 1999 |
| Coro E Orchestra Del Teatro Alla Scala Di Milano | 2 | 1975 - 2013 |
| Coro E Orchestra Del Teatro Alla Scala, Carlo Bergonzi, Adriane Martino | 1 | 1999 |
| Coro E Orchestra Del Teatro Alla Scala, Claudio Abbado | 1 | 1987 |
| Coro e Orchestra del Teatro Communale, Bologna | 1 | |
| Coro E Orchestra Del Teatro Dell'Opera Di Roma | 1 | 2001 |
| Coro e Orchestra dell'Accademia Nazionale di Santa Cecilia | 2 | 1997 |
| Coro E Orchestra Dell'Accademia Nazionale Di Santa Cecilia, Carlo Rizzi | 1 | 1997 |
| Coro E Orchestra Di Roma Della RAI | 1 | 1967 |
| The Coro E Orchestra Milano - Peter Maag | 1 | 2003 |
| Coro Lirico di Torino | 1 | 1969 |
| Coro Titular del Teatro Lírico Nacional "La Zarzuela" | 1 | 1988 |
| Coro Victoria | 1 | |
| Coronation Choir And Orchestra | 1 | 1989 |
| Die Coronels | 1 | 1962 |
| Coros De Radio Nacional De España, L. De Córdoba | 1 | |
| Coros De Radio Nacional De España, Orquesta De Cámara De Madrid | 1 | |
| Corou De Berra | 1 | 2001 |
| Corrie Pronk | 1 | |
| Corrie van Binsbergen | 1 | 2007 |
| Corry Houtman | 1 | 1960 |
| Corydon Orchestra | 1 | 2000 |
| Corydon Singers | 5 | 1989 - 2000 |
| Corydon Singers And Orchestra, Matthew Best | 1 | 2000 |
| Corydon Singers, Matthew Best | 1 | 1986 |
| Corydon Singers, English Chamber Orchestra, Matthew Best | 3 | 1989 - 1990 |
| Cosme McMoon | 3 | 1959 - 1962 |
| Cossotto, Falachi, Ferrari, Gatta, Pontiggia, Rota, Cillario | 1 | 1969 |