Throughout the span of his life Antoni Tàpies has been associated with a number movements such as Art Informel and Haute Pâte or Matter Painting. He became a part of the avant-garde group Dau al Set in 1948 which was a group that had strong ties to Surrealism. Early works of his were surrealistic, but in 1953 he began working in abstract art. It is here that he becomes a part of the Art Informel movement and starts working with mixed media. Art Informel in Europe was the equivalent to Abstract Expressionism in America. This was among the most prevalent styles of art in post-war Europe. Within this movement is the category of Matter Painting. Its focus on the use of odd objects completely undermines the acts of traditional fine art. Some of Tàpies’s most famous and original works fall within this genre. They are characterized by his use of marble dust and clay that he mixed with his paints as well as the incorporation of found objects such as string, paper, and cloth. In the late 1960’s into the early 1970’s Tàpies began to be influenced by the movement of Pop Art. Because of this he began using larger items, such as pieces of furniture, in his works.