Folksong arrangement & variations: Heleen Verleur
(To be published by Donemus quite soon!)
Youtube link to the folksong theme played by pianist Janneke Koetsier:
https://www.youtube.com/watch?v=pEJKTjwqmI
Audio Variation no 5 on Plyve Kacha written by Heleen Verleur (one of nine, computer audio from Sibelius file):