Eurythmy is 

an interdisciplinary art of movement with an intensive relationship to language, word, rhythm, sound, music and – silence.
With eurythmy you can work in many ways: in education, therapy, curative education, social projects, organizational development and performance. Eurythmy was developed at the beginning of the 20th century, in the context of reform movements, originally by Rudolf Steiner, the founder of anthroposophy. Since then it has developed in different directions internationally.