The Kunstsammlung Nordrhein-Westfalen is the art collection of the German Federal State of North Rhine-Westphalia, in Düsseldorf. United by this institution are three different exhibition venues: the K20 at Grabbeplatz, the K21 in the Ständehaus, and the Schmela Haus. The Kunstsammlung was founded in 1961 by the state government of North Rhine-Westphalia as a foundation under private law for the purpose of displaying the art collection and expanding it through new acquisitions.

Paul Klee was a Swiss-born German artist. His highly individual style was influenced by movements in art that included expressionism, cubism, and surrealism. Klee was a natural draftsman who experimented with and eventually deeply explored color theory, writing about it extensively; his lectures Writings on Form and Design Theory, published in English as the Paul Klee Notebooks, are held to be as important for modern art as Leonardo da Vinci's A Treatise on Painting was for the Renaissance. He and his colleague, Russian painter Wassily Kandinsky, both taught at the Bauhaus school of art, design and architecture in Germany. His works reflect his dry humor and his sometimes childlike perspective, his personal moods and beliefs, and his musicality.