Composition X (1939) is one of Kandinsky's last works before his death, and is a culmination of his lifetime's work in experimenting with non-representational painting and the purity of form and expression. The piece incorporates organic shapes, inspired by the flowing biomorphic forms of Surrealism. Many of the shapes of varying sizes resemble microscopic organisms, serving as an optimistic contrast to the stark black "ocean" that is the background, a color that Kandinsky rarely used in his earlier pieces. This is perhaps a depiction of both the cosmos and death, illustrating the harmony and tension throughout the universal while also conveying Kandinsky's own emotions towards the end of his cycle of life. The spontaneous bursts of color amid an isolating medium also perhaps allude to loneliness despite the never-ending progression of the universe, as demonstrated by the various ambiguous forms resembling primordial life, and humankind, illustrated by the more detailed figures that resemble books and architecture, people and culture.