Sonia Terk was born in the Ukraine but left for St Petersburg at an early age before moving to Paris where she spent most of her working life. Along with her husband Robert Delaunay, whom she married in 1910, she was a leading practitioner of what became known as 'Simultanism', an offshoot of Cubism and Futurism, which sought to distil a multitude of different 'modern' experiences and present them simultaneously in a single picture. Simultanist paintings aim to create rhythm, motion and depth through overlapping patches of vibrant contrasting or complementary colours. Sonia Delaunay was the first living artist to have a retrospective in 1964 at the Louvre. The work she made throughout her career crossed the boundaries of fine art, decorative arts and commercial design.