In 1943 John Sennhauser joined the Museum of Non-Objective Painting (later known as the Guggenheim) as lecturer and preparer. Here he would immerse himself in the energy and philosophy of Non-Objective art, especially art works by Xceron and Kandinsky.

By the mid-1940's Sennhauser began a series titled Color Forms in Colorspace. As seen in his masterful composition, Black Forms in Colorspace No. 10, this series carefully employs line, plane and color to create images with striking energy, making it his "most personal means of expression".