Sophie Taeuber-Arp — Composition à Rectangles et Cercles (1931)
A horizontal black canvas with a thin light border. Three circles in the upper left — one white and two blue. Six white circles in three rows on the right side. A grey square in the centre-left and a red square on the mid-right. White rectangular bars cross the composition horizontally, with four short white lines on the lower left creating a measured geometric rhythm.