Ambrosian Opera Chorus

The Ambrosian Singers or Ambrosian Singers are an English choral group based in London and are also known as the Ambrosian Opera Chorus besides other names. History: They were founded after World War II in England. One of their co-founders was Denis Stevens (1922–2004), a British musicologist and viola player who joined the BBC Music Department in 1949 and developed programs of Renaissance and early Baroque music. Stevens conducted them from 1956 to 1960.