This painting is called Guitar on a Chair. The artist that painted this painting is Juan Gris. He created this piece in 1913 in Spain. This style of painting is known as synthetic cubism. He painted this with oil on canvas.
Le Banjo, 1967. Hungarian Bela de Kristo (1920-2006) Using a rigorous cubist format, de Kristo's work displays an additional sensitivity and a softened vision of the world. In his early period he was greatly influenced by the Russian Constructivists such as Malevich as well as Picasso's synthetic cubist works.