Her debut was at the Norwegian National Opera in the part as Dryade in Ariadne auf Naxos, a production she also sang in Santiago de Compostella. Her roles include Amneris in Aida, Carmen in Carmen, Flosshilde in Rheingold and Gøtterdämmerung, Rossweise in die Valküre, Third Lady in der Zauberflöte, Nancy in Albert Herring, Anitra in Peer Gynt, Audne in Stallo, Santuzza in Cavalleria Rusticana, Abel in Il primo Omicidio, Zia Principessa in Soeur Angelica, Prins Orlofsky in die Fledermaus, the Mother in Amahl and the nightvisitors, Maddalena in Rigoletto, Julie in Bibalos Fröken Julie, Endymione in Calisto, Olga in Eugen Onegin, Hänzel in Hänzel und Gretchen, Azucena in Il Trovatore, Giulietta in Un giorno di regno, among others.
Anna Einarsson works with conducters such as John Fiore, Hans Zimmer, Olaf Henzhold, James Wood, Martin Andre, Joshua Riphkin, Harry Christophers, Shalev Ad-El, Francesco Bareza, Emanuelle Haim, Tobias Ringborg, Lars Erik ter Jung, Torodd Wigum, Fredrik Malmberg, Per-Åke Andersson, Honna Tsitjui, Kjell Seim, Terje Boye-Hansen, Rune Bergman, Nicholas Kremer, Tönu Kaljuste, Ole-Kristian Ruud, Antonello Allemandi, Jonathan Stokkhammer, Alssandro de Marchi, Peter Sylwai, Jukka Pekka Saraste.Anna is a sought after soloist at concerts and oratories and sang in e.g. Verdis Missa di Requiem, Beethovens 9th symphony, Missa Solemnis, Mahlers 2nd, 3rd and 8th symphony, Mendehlssohn Elias, Mozart Requiem, Mahler Das Lied von der Erde, Lieder eines fahrenden gesellen, Händel Messias, Bach Magnificat, Christmas Oratory, cantatas, Dvorcak Stabat Mater and Bruckner f-minor mass.She regurarly appears in conserthalls and festivals throughout Erope and Asia.
Anna Einarsson has performed many contemporary pieces, and she is represented in several radio and CD recordings.
In 2014 she recieved a Grammy nomination for her participation in the recording of Ståle Kleibergs opera “David and Batsheba”.