By late 1904 Picasso's mood of depression had lightened, and so also had his palette. A brief Rose Period (1904-6) followed, in which he was less concerned with the tragic aspects of poverty than with the nostalgic charm of circus performers. Salimbanques, of 1905, shows a family of these strolling players grouped together physically, but emotionally detached, before a mysterious desert landscape. Figures and costumes, surely drawn and modelled blend with the ground and the sunny haze in tones of softly greyed blue, rose and beige, creating mother-of-pearl effects. This is one of the loveliest pictures of the 20-th century.
Les Demoiselles d'Avignon, of 1907, heralds the beginning of Cubism. The attitude and methods of the Cubists are not easy to explain. Cezanne had founded planes in real objects and had used them to establish a structure of form seen by means of colour; the Cubists do the opposite, imposing their own structure of mono-chromic planes upon the object. The composition of Les Demoiselles d'Avignon was derived from a small bather composition by Cezanne. The intensity of the partially decomposed figures contrasts with a still life in the foreground. Instead of Cezanne's lovely roses, blues and greens, the figures are largely light brown, their anatomy is indicated by uneven white or black contours. A harsh blue, as if a sudden glimpse of sky, surrounds the figure at the upper right. The staring expressions of the central figures give way at all sides to simplified, influenced by African sculpture, faces.
Heads, busts, still life and occasional landscapes form the subject matter of early Cubist painting. In the Seated Woman, of 1909, the individual forms – the characteristic swelling and distortion of the neck muscles, or the reduction of the eyes to trapezoids – are not derived from nature. Soft tans and olive tones prevail.
By 1911, in the phase known to art historians as Analytical Cubism, the tension has burst, and so has the object. The entire foreground is filled with its component planes, floating as if in a thick mist. The planes are no longer opaque; one seems to see through them, and a great deal of the effect of an Analytical Cubist picture is derived from the delicacy of the intersection of these planes. They are rendered with a divided touch recalling that of Impressionism. These planes build up a pyramidal structure, superseding the structure of observed reality.
Cubism rapidly became a common style. During 1912 the Cubist artists began to turn to a new series of interests and a new kind of experience, responsible for the phase known generally as Synthetic Cubism, since the painters no longer sought to disintegrate the object but to reassert it. In Synthetic Cubism the barrier between reality and representation is unexpectedly broken. Now bits of the real objects make their entrance into the picture: newspaper clippings, lengths of rope, etc. Picasso's The Bottle of Suze, of 1913, is an epitome to this Synthetic phase. Once established, the Cubist mode of vision and construction continued vital for many years. Every abstract current in abstract art during the period from the 1920s to the present owes a debt to Cubism. For the rest of his life Picasso continued to make use of Cubist forms and ideas.
During the years immediately after World War I, it is not possible to talk of «periods» in Picasso's work; two sharply different styles, superficially opposed, but in reality strongly related to each other, exist side by side. The gorgeous Three Musicians, of 1921, is a Synthetic Cubist picture in that the planes are, now locked into a total design, governed by the recognisable image. The three musicians are undoubtedly a Pierrot, a Harlequin and a Franciscan monk. The planes into which they have been divided proceed according to their own laws and not those of natural appearances. The colouring is as brilliant as that of any Fauve painting. Its hard clear tones together with the astonishing size create a splendid decorative effect.
In 1917 Picasso visited Italy. He was greatly impressed by the grandeur of the Italian past, especially Roman sculpture and the mural paintings of Giotto. Quite unexpectedly Picasso developed a monumental and largely monochromatic Classical style with complete figures heavily modelled as if they were statues. He experimented with every aspect of Classical style, but his most imposing Classical creations are the majestic compositions involving seated giantesses seeming to derive from a legendary past. In Three Women at the Spring, of 1921, Picasso has made the figures graceless, emphasising the bulk and weight of their hands and feet, and intensifying the impersonality of their stony faces. For several years this Classical style coexisted in Picasso's production with late Cubism.