A Song for Saint Cecilia’s Day version for mixed choir, children’s choir, piano and percussion (2012)

Fibonacci-Ringtone for soprano, alto and bass (2006)

Gebed Om Ontferming for alto, mixed choir and piano (2000) (also version with organ)

4 Songs for women-quartet (2005)

6 Songs for women-sextet (2002-3)

Twijstried for mezzo-soprano, stringorchestra and harpsichord (1998)

Vocalise for soprano (2010)