Other roles include Erste Dame in Die Zauberflöte at the Salzburger Festspiele, Pamina at Opera de Lille, her role debut as Melisande in Pelléas et Mélisande at Stadttheater Klagenfurt, Beethoven’s Christus am Ölberge with the Beethovenorchester Bonn under Dirk Kaftan and the title role in Sasha Waltz’ production of Toshio Hosokawa’s Matsukaze at Opera Narodowa in Warsaw and at the New National Theatre Tokyo.
Equally sought-after in concert repertoire, she has performed Gottfried von Einem’s Der Prozess with the Radiosinfonieorchester Wien under HK Gruber at the Salzburg Festival and Wiener Konzerthaus, Brahms’ Ein deutsches Requiem with the Orchestre des Champs-Élysées under Philippe Herreweghe, Mahler’s 4th Symphony with the Nederlands Radio Philharmonic, Handel’s Israel in Egypt with the Scottish Chamber Orchestra, Mozart’s Requiem with the Orquesta y Coro Nacionales de España in Madrid and the Gulbenkian Orchestra in Lisbon, Debussy’s La Demoiselle élue with the City of Birmingham Symphony, Haydn’s Seasons with the Orchestra of the 18th Century, Mendelssohn’s Lobgesang and Paulus and Bach’s Matthäus Passion with the MDR Sinfonieorchester Leipzig and the world premiere of Toshio Hosokawa’s Nach dem Sturm with the Tokyo Metropolitan Symphony Orchestra.
Eerens has worked with conductors such as Yannick Nézet-Séguin, Hartmut Haenchen, Lorenzo Viotti, Kazushi Ono, Peter Dijkstra, Richard Egarr, Ton Koopman, Michael Boder, Jean-Christoph Spinosi, Michael Schønwandt, Kenneth Montgomery, Mark Wigglesworth, Jaap van Zweden, Constantinos Carydis, Frans Bruggen, Claus Peter Flor, Antonello Manacorda and Mirga Gražinytė-Tyla.
Awards include the Arleen Auger prize in the International Vocal Competition in 's-Hertogenbosch in the Netherlands, where she was the only the finalist who excelled in all the three categories of Opera, Oratorio and Lieder, and the 3rd prize at the ARD Musikwettbewerb 2006.