Ann Hallenberg (born 17 March 1967) is a Swedish mezzo-soprano. She has an operatic career on the stage and concert platform around Europe. She regularly appears in major opera houses and festivals, in roles by Rossini, Mozart, Gluck, Handel, Vivaldi, Monteverdi, and Purcell. Hallenberg studied at the Royal College of Music, Stockholm, with Kerstin Meyer and Erik Saedén; she undertook further study in London with Joy Mammen.
https://en.wikipedia.org/wiki/Ann_Hallenberg