Pere Ubu: Tom Herman, Scott Krauss, Tony Maimone, Allen Ravenstine, David Thomas (vocals, various instruments). It is hard to believe that such noises could come from so deep in America's heartl&, played by a group named after a French absurdist play. The debut album by Pere Ubu, The Modern Dance is the realization of group leader David Thomas's (a.k.a. Crocus Behemoth) high-concept vision of a rock band whose sound was always just on the verge of falling apart. Avant garde & not terribly