The lyrics for these songs were supplied by, among others, Muus Jacobse, Willem Barnard and Ad den Besten, whom she knew personally.
In the 1960s she became interested in electronic music, and studied with Gottfried Michael Koenig at the Institute of Sonology in Utrecht (Metzelaar n.d.).
Sound and Silence (1971) and Mixed Feelings (1973) are pieces of electronic music she composed, and Pente Sjawoe is an example of a work in which the tone poem plays an important role.
In 1988 she contributed pieces to the international cello competition in Scheveningen, and in 1989 she was composer in residence at the Georgia State University in Atlanta.
[1] Despite the fact that she had become seriously ill, in 1996 Tera de Marez Oyens married the renowned cartoonist Marten Toonder.