While Pere Ubu have never been widely popular—usually categorized as "underground rock"—they have a devoted following, have been hugely influential on several generations of avant-garde musicians and are a critically acclaimed American musical group.
Critical opinions of Pere Ubu include, "the most original and important of the new wave bands", "the world's only expressionist Rock 'n' Roll band", and "Pere Ubu will be looked back on as the most important group to have come out of America in the last decade and a half. Either that or they will be entirely forgotten".
Pere Ubu have compiled a list of guidelines for touring, live performances and the like: "Lighting should be theatrical rather than rockist. We are interested in atmosphere, mood, drama, energy, subtlety, imagination--not rock cliche." The Danish Broadcasting Corporation is one of the few organizations they trust to record live performances, "solely on the basis of the King of Denmark's defense of the Jews in WWII".
To define their music, Pere Ubu coined the term Avant Garage to reflect interest in both experimental avant-garde music (especially Musique concrete) and raw, direct blues-influenced garage rock. Thomas has stated "Avant Garage" is "a joke invented to have something to give journalists when they yelp for a neat sound bite or pigeonhole".
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