Gilliam was one of the great innovators in postwar American painting. He emerged from the Washington, D.C. scene in the mid 1960s with works that elaborated upon and disrupted the ethos of Color School painting. A series of formal breakthroughs would soon result in his canonical "Drape" paintings, which expanded upon the tenets of Abstract Expressionism in entirely new ways. Suspending stretcherless lengths of painted canvas from the walls or ceilings of exhibition spaces, Gilliam transformed his medium and the contexts in which it was viewed. As an African-American artist in the nation’s capital at the height of the Civil Rights Movement, this was not merely an aesthetic proposition; it was a way of defining art’s role in a society undergoing dramatic change. Gilliam subsequently pursued a pioneering course in which experimentation was the only constant. Inspired by the improvisatory ethos of jazz, his lyrical abstractions take on a variety of forms, moods, and materials.