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: embracing 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