Tap dance is believed to have begun in the mid-1800s during the rise of minstrel shows. Famous as Master Juba, William Henry Lane became one of the few black performers to join an otherwise white minstrel troupe, and is widely considered to be one of the most famous forebears of tap dance. Tap dance is a form of dance characterized by using the sounds of tap shoes striking the floor as a form of percussion. Two major variations on tap dance exist: rhythm (jazz) tap and Broadway tap. Broadway tap focuses on dance; it is widely performed in musical theater. Rhythm tap focuses on musicality, and practitioners consider themselves to be a part of the jazz tradition.