Oct 2, 1975 (49 years ago) Spokane Convention Center Spokane, Washington, United States
Art Rock, Avant-Garde, Avant-Prog, Big Band, Blues Rock, Classic Rock, Classical, Comedy Rock, Doo-Wop, Electronic, Experimental, Experimental Rock, Instrumental Rock, Jam Band, Jazz, Jazz Fusion, Jazz Rock, Modern Classical, Musique Concrète, and Orchestral.
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