Subterranean Music, Amsterdam: A great little independent CD store
in the heart of Amsterdam. Here you can buy CD's online like the
Wolter Wierbos CD's Wierbos and XCaliber:
CD "Wierbos" online
CD "XCaliber" online
Stichting dOeK is a non-profit organisation founded by five musicians
representing various groups active in the improvised music world.
Encycopedia of Dutch popmusic.
for a direct link to Wolter Wierbos.