Swiss-German artist Paul Klee didn’t restrict himself to one genre or to traditional use of materials and techniques — he has been associated with expressionism and surrealism and half a dozen other movements, and he taught at the Bauhaus school from 1921 to 1931. His works use oils, ink, watercolor, pastels, and even spray paint in various combinations. Not stopping at canvas, he also used cardboard, fabric, newsprint, gauze, and other materials in his creations.
Klee often played the violin as warm-up to painting, and he compared the visual rhythm in his artwork to the rhythms of musical compositions. Rainer Maria Rilke wrote, "Even if you hadn’t told me he plays the violin, I would have guessed that on many occasions his drawings were transcriptions of music."
His works sometimes contain musical notation, along with other pictorial symbols and signs, such as letters, arrows, and hieroglyphs. He admired the intense originality of much children’s art and strove for a similar sense of ingenuous simplicity in his own creations, in both unstudied line and intense colors. In 1914 he took a quick trip to Tunisia, where he was struck by the quality of the light, causing him to write, "Color has taken possession of me; no longer do I have to chase after it, I know that it has hold of me forever... Color and I are one. I am a painter."