As its designation suggests, the symphonie concertante is a hybrid genre that draws on both the symphony and concerto traditions. In the eighteenth century the symphonie concertante assumed two broad styles: a work that was fundamentally symphonic in conception but with important obbligato parts for two or more instruments, or a work that was in most respects indistinguishable from a concerto with multiple soloists in its retention of the characteristic hybrid sonata-ritornello structure. Saint ...