Apart from Claus being a l
His knowledge is transferred in a down-to-earth and noncompetitive way.
~I got to experience him on a 6 day drum camp in Poland and in the midst of all the craziness and demands, he always stays profesional and is always ready to teach and answers questions. Meeting him is far from anything you will ever experience in a book or online (and there is a lot of good material out there)!
~ Ezra Mijnhijmer~