Fauvism as a style began around 1900 and continued beyond 1910. The movement as such lasted only a few years, 1904–1908, and had three exhibitions. The leaders of the movement were Matisse and André Derain. Matisse's first solo exhibition was at Ambroise Vollard's gallery in 1904, without much success. His fondness for bright and expressive colour became more pronounced after he spent the summer of 1904 painting in St. Tropez with the neo-Impressionists Signac and Henri-Edmond Cross. In that year, he painted the most important of his works in the neo-Impressionist style, "Luxe, Calme et Volupté". In 1905, he travelled southwards again to work with André Derain at Collioure. His paintings of this period are characterised by flat shapes and controlled lines, using pointillism in a less rigorous way than before.