The theater has always been a playground where artists combine different mediums and genres. Plays and musicals rely on the set and lighting to carry the show to a higher level of expression. People from different mediums contribute their work to the overall show being presented. Dance performances lead the way to some of the most progressive mixtures of medium. People often call pieces "performance art" because they are not sure what else to call a concert that combines dance, the spoken word, and the visual arts. Artists, such as choreographer Dianne McIntyre, explains that when using varied mediums, "the words and dance become one--intertwined so you couldn't imagine one without the other… It feels somewhat natural to me--but it is also some what daring." Whether an audience will like or receive the piece well constitutes part of the venture. The risk and daring nature of such blended works diminishes as merging different arts often receives a better reception from the public. The public has started to see the advantages of multi-art performance. To many artists the advantages of synergy in performance seem natural--with good reason. Nature itself seeks strength through the combination of materials. The transformation of dance or theater into performance art can be described as a mating of two art forms to produce a stronger offspring. In the spirit of Hybrid Vigor, the play "For Colored Girls who have considered suicide/ when the rainbow is enuf" presents "an exploration of a black woman's sexual, social, and artistic identity." Shange's first published choreopoem is considered her "most philosophically optimistic and idealistic despite its realistic foundations." The choreopoem stands out as an excellent example of the evolution of dance, theater, and writing. The art form emerged from African traditions in storytelling, rhythms, and physical movement. The impact of such a piece is an emotional catharsis.