In orchestra performance, a single conductor directs all the players in the real world. However no restriction is applied when designing a virtual conductor in the virtual world. Thus a virtual conductor system that employed multiple virtual conductors has been proposed. The system assigns each virtual conductor to each musical instrument part, making players’ performance better and more easier. Generation of the multiple conductor avatars is, however, still an issue of the system. It needs much time and work. In this paper, we propose a efficient virtual-conductor-avatar generation system. The time needed is surprisingly reduced while keeping the quality of the virtual-conductor avatars.