JWZ writes about a record company who release their works under a Creative Commons licence and goes on to quote Chuck D on sampling :
Public Enemy’s music was affected [by copyright lawsuits] more than anybody’s because we were taking thousands of sounds. If you separated the sounds, they wouldn’t have been anything—they were unrecognizable. The sounds were all collaged together to make a sonic wall. Public Enemy was affected because it is too expensive to defend against a claim. So we had to change our whole style, the style of It Takes a Nation and Fear of a Black Planet, by 1991.