Cubism was an influential art movement in the early 20th century led by Pablo Picasso and Georges Braque. They developed Analytic Cubism between 1907-1911, depicting subjects from multiple viewpoints in geometric forms. There were three main phases of Cubism: Early Cubism from 1906-1908 focused on flattening forms; High Cubism from 1909-1914 featured collage elements; and Late Cubism from 1914-1921 returned to a more representational style. Two paintings showcased the Cubist style - Picasso's "Woman Playing a Mandolin" from 1909 and Braque's "Woman with Guitar" from 1913, both depicting women playing instruments in fragmented, geometric forms.