| Cantilena Chamber Players | 1 | 0 |
| Cantillation | 11 | 0 |
| Canto Fiorito | 0 | 0 |
| Cantor | 0 | 0 |
| Cantor Elliot Vogel | 0 | 0 |
| Cantores | 0 | 0 |
| Cantores Minores | 0 | 0 |
| Cantores Minores | 3 | 0 |
| Cantores Minores Wratislavienses | 5 | 0 |
| Cantores de Madrid | 0 | 0 |
| Cantores in Ecclesia | 2 | 0 |
| Cantores in Ecclesia Choir | 0 | 0 |
| Cantori New York | 1 | 0 |
| Cantoribus | 0 | 0 |
| Cantoría Alberto Grau | 0 | 0 |
| Cantus | 3 | 0 |
| Cantus | 0 | 0 |
| Cantus Cölln | 31 | 0 |
| Cantus Juvenum Karlsruhe | 4 | 0 |
| Cantus Novus Wien | 0 | 0 |
| Cantus Thuringia | 0 | 0 |
| Canzone-Koret | 4 | 0 |
| Canzonetta Nova | 0 | 0 |
| Caoimhín Ó Raghallaigh | 0 | 0 |
| Caos.808 | 0 | 0 |
| Cap Kendricks | 6 | 0 |
| Cap1talA | 0 | 0 |
| Capcom Sound Team | 0 | 0 |
| Capdown | 0 | 0 |
| Cape Philharmonic Orchestra | 2 | 0 |
| Cape Town Opera Voice of the Nation | 1 | 0 |
| Cape Town Philharmonic Orchestra | 1 | 0 |
| Cape of Bats | 0 | 0 |
| Capella Academica Wien | 9 | 0 |
| Capella Agostino Steffani | 0 | 0 |
| Capella Alamire | 0 | 0 |
| Capella Angelica | 0 | 0 |
| Capella Antiqua | 0 | 0 |
| Capella Antiqua München | 20 | 0 |
| Capella Augustina | 2 | 0 |
| Capella Bavariae | 0 | 0 |
| Capella Brugensis | 4 | 0 |
| Capella Bydgostiensis | 3 | 0 |
| Capella Clementina | 0 | 0 |
| Capella Cordina | 0 | 0 |
| Capella Cracoviensis | 0 | 0 |
| Capella Ducale Venetia | 2 | 0 |
| Capella Fidicinia | 15 | 0 |
| Capella Figuralis | 0 | 0 |
| Capella Istropolitana | 86 | 0 |
| Capella Orlandi Bremen | 0 | 0 |
| Capella Regia Musicalis | 2 | 0 |
| Capella Ricercar | 1 | 0 |
| Capella Sancti Georgi | 0 | 0 |
| Capella Sancti Michaelis | 13 | 0 |
| Capella Savaria | 30 | 0 |
| Capella St. Nicolai | 0 | 0 |
| Capella Thomana | 1 | 0 |
| Capella Thuringia | 0 | 0 |
| Capella Tiberina | 0 | 0 |
| Capella Weilburgensis | 1 | 0 |
| Capella de Ministrers | 0 | 0 |
| Capella de Música de Montserrat | 0 | 0 |
| Capella de la Torre | 13 | 0 |
| Capercaillie | 0 | 0 |
| Capicua | 6 | 0 |
| Capilla Flamenca | 38 | 0 |
| Capilla Peñaflorida | 0 | 0 |
| Capilla musical y escolanía de Santa Cruz del Valle de los Caídos | 0 | 0 |
| Capital Cities | 3 | 0 |
| Capitol Chamber Artists | 0 | 0 |
| Capitol Symphony Orchestra | 0 | 0 |
| Capitão Fausto | 0 | 0 |
| Capleton | 0 | 0 |
| Capo Lee | 0 | 0 |
| Capolow | 4 | 0 |
| Capone | 0 | 0 |
| Cappa Ensemble | 0 | 0 |
| Cappella Academica Frankfurt | 0 | 0 |
| Cappella Amsterdam | 19 | 0 |
| Cappella Aquileia | 3 | 0 |
| Cappella Augustana | 0 | 0 |
| Cappella Breda | 0 | 0 |
| Cappella Coloniensis | 26 | 0 |
| Cappella Gabetta | 8 | 0 |
| Cappella Gedanensis | 0 | 0 |
| Cappella Marciana | 0 | 0 |
| Cappella Mariana | 3 | 0 |
| Cappella Mauriziana | 0 | 0 |
| Cappella Mediterranea | 19 | 0 |
| Cappella Murensis | 0 | 0 |
| Cappella Musicale Enrico Stuart | 3 | 0 |
| Cappella Musicale Santa Maria In Campitelli | 0 | 0 |
| Cappella Musicale della Cattedrale di Verona | 0 | 0 |
| Cappella Musicale di San Petronio di Bologna | 8 | 0 |
| Cappella Neapolitana | 4 | 0 |
| Cappella Nova | 0 | 0 |
| Cappella Palestrina | 2 | 0 |
| Cappella Pratensis | 0 | 0 |
| Cappella Romana | 0 | 0 |