Collage is a visual art form that combines different materials like paper, photographs, and found objects glued to a backing surface. A collage forms a new whole from disparate parts. Popular collage artists from the early 20th century Dada movement included Kurt Schwitters, Hannah Hoch, and Raoul Hausmann. Later, Henri Matisse and Romare Bearden experimented with paper cutouts and representational collages incorporating social commentary. Today, many contemporary artists continue working in the collage medium.