Very much enjoying these works-on-found-music-manuscripts by the young British artist Ruth Proctor, whose work is otherwise largely installation-and-performance based, and plays with dimension, perception and color.
They remind me a lot of the Agnes Martin works I saw at Dia: Beacon over the weekend. (I did not see these exact two, but related bodies of works).
(Aspiration, 1960 by Agnes Martin, Private Collection, New York)
(Untitled, 1963 by Agnes Martin, Private Collection, New York)