Learn how to say Eurythmy correctly in English with this tutorial pronunciation video.
Oxford dictionary definition of the word eurhythmics:
[treated as singular]
a system of rhythmical physical movements to music used to teach musical understanding (especially in Steiner schools) or for therapeutic purposes, evolved by Émile Jaques-Dalcroze.
early 20th century: from eu- ‘well’ + rhythm + -ics