Or Organ. Par ROESGEN-CHAMPION MARGUERITE. Born in Geneva of a jeweller father (and excellent flautist) and singer mother, Marguerite Roesgen-Champion (1894-1976) was one of those rare women who reconciled family life (in 1926, she settled in Paris with her husband, a philately merchant) with a professional activity devoted to music. Her abundant output graced all genres, with a predilection for s…