Composed in 1953, shortly after the three pieces constituting the Folio set, Earle Brown's twenty-five page piano work consists of "fully described material, of pitch, dynamic and duration, in a relative sense.". Since the pitch is determined and the duration is relative - notated in stemless black notes of varying lengths, each note with a specific dynamic marking - the composer considers this work a true realization of his notion of the open form, as compared to the "open content" of the Folio pieces. Again, like Folio, the "mobility of the elements was inspired by the mobiles of Alexander Calder. ~ "Blue" Gene Tyranny, Rovi