The musical life in wartime Taiwan used to be simplistically described by the cliché “jin guyue” (literally “the banning of drum and music”). But recently some researchers have pointed out that, after the softening of the kominka or Japanization policy in 1941, there appeared to be a revival of Taiwanese music as a result of the intervention by the Japanese. On the one hand, the Japanese tried to control Taiwanese music. On the other hand, they also promoted it in order to further facilitate the Japanization of the Taiwanese people. There were two examples of such so-called “conditional revival” of Taiwanese music: one was the reappearance of Taiwanese music on the radio, and the other was the expansion of the so-called “New Taiwan Music Movement”. So far neither these two examples nor the banning of Taiwanese music during the wartime have been researched in depth. In view of this gap, this paper takes the music of the Han people in Taiwan as its focus and uses the observations made by Kurosawa Takatomo as a member of the “Taiwan Music Investigation Team” in order to outline Japan’s colonial policy toward Taiwanese music. This paper shows that the period of the team’s visit happened to be an important turning point in t. First, although the Japanese banned the public performances of Han music and replaced the Confucian ceremony with Shinto-style rituals, religious music resumed its activities, and Confucian traditional ceremony was held to facilitate the work of the Investigation Team. Secondly, with the starting the Second Broadcast in October 1942, Taiwanese music was allowed to reappear on the radio. Thirdly, the New Taiwan Music Movement is now getting ready to turn itself into an island-wide movement. However, these seeming revival of Han music is only “conditional revival”. Thus, the holding of traditional Confucian ceremony had to be altered and explained in certain ways in order to meet the need of the Japanization movement and the rhetoric of the Dai Toa Kyoeiken (Great Asia Co-prosperity Circle); the radio program promoted innovated Taiwan music with Japanese and wartime elements to raise morale and to propogate the Japanese spirit; the New Taiwan Music Movement was making further reformations of Taiwanese music in order to enhance the Japanization movement and to contribute to the creation of the music of the Great Asia.