Dancers have better than average peripheral vision. Head angles are prescribed by the dance, so dancers have to use their eyes themselves if they want to look to the side, without turning their heads.
Destructors
Many historical waves of dances were perceived as the "destructors" of the old way of dance. Examples of that can be found in the 1920's Charleston and the era of Rock music.
Waltz
Waltz, one of the most popular dances today came into popularity in mid-19th century by the efforts of the famous composer Johann Strauss, but its origins can be traced even to the distant 16th century.
