Marie-Anne Weber au violon alto ou Violoniste (1903). Théo van Rysselberghe (Belgian, 1862-1926). Oil on canvas.
Van Rysselberghe studied in Ghent and Brussels, and he was among the founders of both the Twenty (Les XX) and the Free Aesthetics (La Libre Esthétique), the two major associations of Belgian artists at the turn of the 20th century. He was influenced by the work of Georges Seurat.