However, more stunning than all of this was the interplay of the works of the 3 artists exhibited; Frantisek Kupka, Alexander Calder and, of course, Joan Miro. The one thing that struck me was the interesting use of line each of these artists has made his own.
[Frantisek Kupka, Vertical and Diagonal Planes, c 1914-15, Oil on Canvas. Source: here]
The retrospective of Kupka shows the evolution of his art, his amazing work as a colourist and his use of both geometric and organic line. Kupka is a complex artist, hard to define or classify into a certain movement within the 20th Century. Perhaps that is because the artist "never felt comfortable with the limits imposed by specific movements". His body of work contains de Stijl style; basic geometric forms with basic colours as well as abstractions showing an acute understanding of tone and hue in concentric circles and organic forms. His work, although referencing the world, is totally formalist, concerned only with the painting - the colour and the form, and devoid of narrative and allegory;
[Alexander Calder, Untitled, 1942, Sheet Metal and Wire. Source: here]