Anneleen Bijnen auditioned for a position in the permanent Chorus of Dutch National Opera in 1991, even before graduating from her studies as a Performing Musician. She was accepted as second alto. This gave her the opportunity to gain experience in the opera profession, by watching and learning from the best conductors, soloists and directors. She left for a short period of time to sing with the WDR Rundfunkchor in Cologne, but soon missed the stage and returned to the Chorus of DNO, where she can indulge herself in countless guises and roles in various productions. Anneleen has also worked as a soloist with, among others, the Staatstheater Stuttgart, has sung many oratorios in the Netherlands and abroad and has given various song recitals. Almost every season she performs in a Lunch concert in the foyer of Dutch National Opera & Ballet. With DNO she has been given the opportunity to perform many small roles, such as in The Nightingale and other fables, Lohengrin, Tannhäuser, Die Meistersinger von Nürnberg, Ercole amante and Oedipe. She also performed the role of Kate Pinkerton in Madama Butterfly.
Although Anneleen is a mezzo-soprano, she also feels at home with her alto colleagues. To reinvent herself on a daily basis, she is always looking for ways to improve herself technically.