Violin Paste 65x50cm 1907 Paris Picasso Museum Collection. Picasso quickly perceived the crisis of Analytic Cubism as nearly purely conceptual. From 1912, he cleverly incorporated concrete objects: collage, freeing his canvases from dryness and the constraints of line, clarifying form, enhancing color areas, and revolutionizing Cubist painting. Works include Still Life with a Chair Caning (1912). After 1913, Picasso’s Cubist paintings regained rich color, moving from linear-form Cubism to color-plane-form painting. Works include Violin and Music Sheet (1912), Guitar (1913), and Man with a Pipe (1914).