A significant figure in avant grade cinema, Yalkut initially gained a lot of attention from his involvement in the USCO group: an American media art collective founded by Gerd Stern, Michael Callahan, and Steve Durkee but to which Yalkut soon became a significant figure creating many of the group’s installations, films and often designing the group’s publicity material. The films TURN, TURN, TURN , GHOST REV, DIFFRACTION FILM, and DOWN BY THE RIVERSIDE might be regarded as works that were primarily created as USCO artworks although the first of these films was created in co-operation with Nam June Paik – the giant of experimental video with whom, thereafter, he regularly collaborated.
The emerging counter culture scene and the rise of rock music as the dominant musical genre in the United States led Yalkut to make a number of films involving musicians and, in particular, the film AQUARIAN RUSHES where Yalkut documented the events and bands of Woodstock. He continued to involve himself with new music performances including being part at times of the Fluxorchestra (which had a fluid and ever changing membership) but he also continued to create major installations using projections and music. Even in his later years he would often film musicians including jazz innovators such as Warren James and Pee Wee Russell.