An off-shoot from Cubism, Orphism focussed on geometric shapes and colour. Sonia and her husband Robert are credited with the founding of the movement.
“In the Delaunays’ work patches of subtle and beautiful colour are brought together to create harmonious compositions.
The term, sometimes called orphic cubism, was coined around 1912–13 by the French poet and art critic Guillaume Apollinaire and used to distinguish their work from cubism generally. The name comes from the legendary ancient Greek poet and musician Orpheus. Its use by Apollinaire relates to the idea that painting should be like music, which was an important element in the development of abstract art. Robert Delaunay himself used the term simultanism to describe his work.” via http://www.tate.org.uk