Moreover, Alfred Barr, pertained to masterpieces by the artist Wassily
Kandinsky as abstract expressionism, which was noted to have been in 1929.
Pure plasticity — the aesthetic «truth,»
as it were — was expressed, if in different formal terms from those of Cubism, in the
abstract expressionism of Wassily
Kandinsky, the leader of Der Blaue Reiter («The Blue Rider») artists in Munich, Germany, in Kazimir Malevich's Suprematism, in Russian Constructivism, and in the geometric abstraction of Piet Mondrian and Theo van Doesburg of the Dutch De Stijl group.