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)
