Mazo has a clear appreciation for modern dance and its makers and attempts to give a brief (albeit opinionated) history of significant modern dance choreographers. He acknowledges that some dancers and choreographers are noticeably absent from Prime Movers because their work does not contribute to the main line of development explored in the book. In all, it is well-written, concise, descriptive, interesting, and stayed true to Mazo's interest in a specific line of modern dance development. Mazo nicely compares and contrasts choreographers in each section while outlining why their specific contributions merit study. While proclaiming that he considers many of the choreographers to be of "genius" choreographic status, he thoroughly explores why those whom he does not (such as Alvin Ailey) made significant contributions to the field in other ways.