19 10, Braque painted a nail on the top of a still life painting called violin and pot in a realistic way, which made the painting look like it was hanging on a nail. At that time, the press attacked it. However, this pioneering work was imitated by cubist painters. Since then, Braque introduced letters and numbers into the picture as themes, and also painted fake wood and marble in the painting. Later, he simply went further and directly put the physical objects (usually pieces of paper, sawdust, etc.). ) into the picture. In this way, collage, a comprehensive cubist painting language, was born.

Braque's collage creation began at 19 12. He tried to enhance the composition effect of the picture through a series of collage abstract graphics. His production process is more and more concise and bold, and the effect of his works is more and more direct and clear. He started from the abstract, and then slowly turned to the concrete, looking for his own theme in overlapping abstract graphics. His collage seldom uses other materials except paper. This kind of material, which is often regarded as artistic, has brought great convenience to Braque's "architectural painting" creation.

Braque's clarinet, written in 19 13, is his collage masterpiece. He used wood paper, newspaper and colored paper to collage a set of simple shapes in the center of the picture, and drew lines and shadows around the shapes with a pencil. Here, the objective image and subjective creative elements are integrated with each other, resulting in an unexpected but convincing modeling value and intimacy. In this simple and rigorous picture structure, every visual element, whether it is a different piece of paper or an understated line, has become a symbol. Those lines give the clip-and-paste graphics some support and meaning, and even make people feel some spiritual connotation. Through collage, the artist shows the audience some performance factors that seem to be forgotten, especially the aesthetic feeling of materials and colors. This is obviously quite different from the style of analytical cubism.

This work also shows Braque's amazing ability to control and process the picture space. If his analysis of spatial processing in cubist works shows a sense of movement and vitality, then in the exploration of so-called comprehensive cubism, his picture combination presents a strange and stable static trend. All the characters in the painting gather at the center of the painting. The painter surrounded the characters composed of pieces of paper with a light and sure line, thus further strengthening the centripetal force of the picture, effectively blocking all actions that may exceed its limit, and blocking back any details that seem to be beyond its force field.

Although Legge is not a figure who is completely involved in the cubist movement, he is undoubtedly the core figure of the movement. His paintings are closely related to modern industrial civilization, both in subject matter and image, with clear shapes and bright colors, and are unique in cubist painting.