The Bauhaus painter Paul Klee was a Swiss-born artist who was associated with the German avant-garde movement of the early 20th century. He is known for his unique style of abstract art, which combined elements of Expressionism, Cubism, and Surrealism. Klee's work was heavily influenced by music, literature, and nature, and he often used bright colors and geometric shapes to create his compositions. He was also a teacher at the Bauhaus school in Germany, where he taught classes on color theory and design.