While today the Fluxus collective is recognized for its radical neo-avant-garde works of performance, publishing, and relational art and its experimental, interdisciplinary approach, it was not taken seriously in its own time. With Fluxus Forms, Natilee Harren captures the magnetic energy of Fluxus activities and collaborations that emerged at the intersections of art, music, performance, and literature. The book offers insight into the nature of art in the 1960s as it traces the international development of the collective’s unique intermedia works—including event scores and Fluxbox multiples—that irreversibly expanded the boundaries of contemporary art.