The Swedish mezzo-soprano Ann Hallenberg regularly appears in opera houses and festivals such as Teatro alla Scala Milan, Teatro La Fenice Venice, Teatro Real Madrid, Theater an der Wien, Opernhaus Zürich, Opéra National Paris, Opéra de Lyon, Théâtre de La Monnaie Brussels, Netherlands Opera Amsterdam, Bayerische Staatsoper München, Staatsoper Berlin, Semperoper Dresden, Royal Swedish Opera, Salzburg Festival, Verbier Festival and Edinburgh Festival.
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 works of Monteverdi and Cavalli, via Mozart, Haydn, Beethoven, Berlioz, Brahms, Mahler and Chausson up to contemporary works of Franz Waxman and Daniel Börtz.
Ann Hallenberg regularly works with conductors such as Fabio Biondi, William Christie, Sir John Eliot Gardiner, Emmanuelle Haïm, Philippe Herreweghe, Marc Minkowski, Riccardo Muti, Kent Nagano, Sir Roger Norrington, Sir Antonio Pappano, Christophe Rousset and Alberto Zedda.
She has recorded more than 40 CD and DVD with music by Bach, Handel, Vivaldi, Mozart, Haydn, Gluck, Rossini, Mendelssohn, Brahms and Bruckner, just to mention a few. At the International Opera Awards in London in May 2016 her solo-CD "Agrippina" won the award for "Best Operatic Recital". This was her second win in the category, having also won in 2014.