as a style, abstract expressionism also ranged over two very different sensibilities, both reflected in edwards' work. one was characterized by energetic brushwork and rhythmic, dynamic compositions, as seen in the works of jackson pollock, robert motherwell and antoni tàpies. the other was more contemplative in mood and made up of subtle color harmonies, often sombre, with relatively static compositions and simple forms, exemplified by the paintings of mark rothko and ad reinhardt.