The OHO Group, a Slovene artistic collective formed in the late 1960s, consisted of Marko Pogačnik, the group’s main organizer, Milenko Matanovič, David Nez, and Andraž Šalamun as the permanent, core members.

As explained by Slovenian Art Historian Igor Spanjol, “In his youth, Matanovic was an active and inventive member of the Ljubljana ‘hooligans’ circle.. initially a pejorative word for long-haired youths who dressed unconventionally and listened to rock music, with connotations of asocial and potentially dangerous attitudes, which served as an excuse for more or less severe repressive measures. After a while, the ‘hooligans’ adopted the moniker, challenging with their unconventional behavior both the increasing consumerism of socialist society and the formalist conventions regulating the socialist system. They expressed their disillusionment with the empty social form, the amassing of things, and the neglect of human values and relations by protesting and by seeking more genuine and direct human relations. They felt an affinity with rock culture, slowly gaining ground in Slovenia at the time, finding in it a similar sense of protest and rebellion. In art, they were drawn to avant-garde trends in their search for the free expression of their individuality and direct communication.”

The OHO Group achieved success in the late 1960s and early 1970s by exhibiting throughout former Yugoslavia as well as internationally, including the Information at MoMA in New York in 1970. Recognizing the group’s pioneering importance in linking art and nature, the group’s early work was exhibited at the 2017 Biennale of Venice.

Today the OHO Group’s legacy continues as a crucial reference for Slovene contemporary art. Milenko’s works have been reenacted by other artists, a major Slovene prize for young artists has been named after the group, and the work continues to be exhibited worldwide.