Since at first she was not primarily interested in a career as a soloist, she concentrated after graduation on coaching young singers and on performing in ensembles. For thirteen years she was a music teacher at the Geert Grote School in Amsterdam, where she was responsible for, among other things, final exams and all performances.
Her singing career gradually took shape as she began to give solo recitals and to sing in Bach cantatas, as well as performing with close harmony ensembles and taking part in many productions of both early and contemporary repertoire. She also conducted amateur choirs in Haarlem and Amsterdam. Since 2000 Annet is a singer with the Nederlands Kamerkoor.