Ann Hallenberg, born 1967, is a Swedish mezzo-soprano. 　　Ann Hallenberg has established herself as one of Europe’s leading mezzo-sopranos. She regularly appears in opera houses including the Milan Teatro alla Scala, Venice Teatro la Fenice, Madrid Teatro Real, Vienna Theater an der Wien, Opernhaus Zürich, the Paris Opéra National, Opéra de Lyon, Netherlands Opera in Amsterdam, the Bavarian State Opera in Munich, Semperoper Dresden and Royal Swedish Opera. Equally at home on the concert platform she has built an unusually wide concert repertoire that spans music from the early seventeenth-century works of Monteverdi and Cavalli, via Mozart, Beethoven, Berlioz, Mahler, Martin and Chausson up to contemporary works of Franz Waxman and Daniel Börtz. Ann Hallenberg frequently collaborates with conductors such as Riccardo Muti, Sir John Eliot Gardiner, Alberto Zedda, Christophe Rousset, Marc Minkowski, Alan Curtis, Emmanuelle Haïm, William Christie, Lothar Zagrosek, Fabio Biondi, Ivor Bolton, Philippe Herreweghe and Sir Roger Norrington. She has recorded numerous CDs and DVDs with music by Bach, Handel, Vivaldi, Mozart, Haydn, Gluck and Mendelssohn, among others.