Saint-Quentin-en-Yvelines – A major electro music festival on the Leisure Island in July | The Gazette of Saint-Quentin-en-Yvelines Posted on AuthorLeave comments On July 7 and 8, the Saint-Quentin site will host the Treesome festival. This event will bring together some forty artists and will be placed under the sign of electronic music, nature and social ties.
