New Techniques for the Bass Clarinet ( www.shoepair.com ) is considered to be the standard work for instrumentalists and composers interested in extended techniques .
( www.shoepair.com ) bok wrote in 1989 ( revised in 2011 ) .
New Techniques for the Bass Clarinet ( www.shoepair.com ) , which Bok wrote in 1989 ( revised in 2011 ) , is considered to be the standard work for instrumentalists and composers interested in extended techniques .