The Pacific Northwest -based band was formed in 2002. Billet-Deux plays acoustic jazz influenced by the work of Django Reinhardt and his musical heirs. Music filtered through the cafes of Paris, the tradition of Django Reinhardt, Classical concert halls, and modern jazz all combine within Billet-Deux to create a incredible musical experience. Modern Gypsy Jazz. The group has built a large and loyal following through the years with their masterful melding of the gypsy jazz, modern jazz, ethnic, and classical genres.