Performance art is a live performance that combines elements from many branches of art. A performance artist typically uses literature, the visual arts, popular culture, music, dance, and theater, as well as video, slides, and computer-generated images. A performance can consist of one person or several and may take place anywhere and last for any length of time. Performance art often uses the performer's body as the primary art medium. The performance may be autobiographical or make a political statement, especially of a radical nature. It often merges art with daily activities.