Watch Free Online HD Moviesjoy. In conversation with Roy Lichtenstein, critic Lawrence Alloway places Pop Art on a continuum of twentieth-century art that includes collage, Dada, and Purism in referring to signs and objects of contemporary society; Lichtenstein argues for distinctions between himself, Warhol, Oldenburg, and others. In his Long Island studio, Lichtenstein works on an elaborate composition; one of his 4 major paintings on the theme "The Artist's Studio."