The Swedish mezzo-soprano Ann Hallenberg regularly appears in opera houses such as Teatro alla Scala Milan, Teatro Real Madrid, Theater an der Wien, Opernhaus Zürich, Opéra National Paris, Bayerische Staatsoper München, Staatsoper Berlin, Semperoper Dresden and Royal Swedish Opera. Her operatic repertoire includes a large number of roles by Rossini, Mozart, Gluck, Massenet, Handel, Vivaldi and Monteverdi. Equally at home on the concert platform she frequently appears in concert halls and festivals throughout Europe and North America. She has built an unusually vast concert repertoire that spans music from the early 17th Century till contemporary music. She regularly works with conductors such as Fabio Biondi, William Christie, Alan Curtis, Sir John Eliot Gardiner, Emmanuelle Haïm, Nikolaus Harnoncourt, Philippe Herreweghe, Paavo Järvi, Louis Langrée, Marc Minkowski, Riccardo Muti, Kent Nagano, Sir Roger Norrington, Sir Antonio Pappano, Christophe Rousset and Alberto Zedda. She has recorded more than 30 CD and DVD with music by Bach, Handel, Vivaldi, Mozart, Haydn, Gluck, Rossini, Mendelssohn, Brahms and Bruckner, just to mention a few.