All Music Guide http://www.allmusic.com/
A search on "Breuker" yields various info pages on Breuker and the Kollektief.
Drummers Double Bill http://www.drummersdoublebill.nl/
The impulse to form the "Drummers Double Bill" emerged when Rob Verdurmen, drummer for the Willem Breuker Kollektief since 1974, discovered how much fun composing could be...