Balthus, Guitar Lesson Balthasar Klossowski de Rola (February 29, 1908 – February 18, 2001), known as Balthus, was a Polish-French modern artist. He is known for his erotically charged images of pubescent girls, but also for the refined, dreamlike quality of his imagery. Oil print on canvas, 50X60cm The picture is an oil print on canvas and will be sent in a tube. It is not an original.