Proto-Cubism color, simply by eliminating color from his paintings, Picasso in 1908 concentrated on form. Kahnweiler notes: "Derain, too, had abandoned decorative light painting in 1907", Kahnweiler writes, "preceding Braque by a few months. But from the outset, their roads were diverse. Derain's endeavor to retain fidelity to nature in his painting separates him forever from Cubism, no matter how closely his ideas may otherwise parallel those of Braque." And Derain was not the only one to venture along the path of Cézanne, only to turn away from it in the coming years. Chagall, Friesz, Matisse, Dufy, Redon, Vlaminck and Modigliani
20th-century classical music explored in their respective articles. At the end of the 19th century (often called the "Fin de siècle"), the Romantic style was starting to break apart, moving along various parallel courses, such as Impressionism and Post-romanticism. In the 20th century, the different styles that emerged from the music of the previous century influenced composers to follow new trends, sometimes as a reaction to that music, sometimes as an extension of it, and both trends co-existed well into the 20th century. The former trends, such as Expressionism are discussed later. In the early part of the 20th century, many composers wrote