This paper explores diasporic identities through the music of Zainichi (Japan-resident) Koreans. First generation Zainichi Koreans were forcibly brought to Japan during the colonial period and divided into South Koreans and North Koreans in Japan. Nevertheless, they have differentiated themselves from so-called newcomers who moved to Japan from South Korea after the division of Korea, especially after the 1980s. Zainich Koreans have embraced the legacy of colonialism and Korea`s division, crossing multiple boundaries and performing diasporic identities through their music. The music of Zainichi Koreans performing diasporic identities can be examined in the light of long-distance nationalism and hybridity. Long-distance nationalism tends to use the music of homeland to emphasize differences, while hybridity is the very locus where multiple attachments are integrated into diasporic identities. Both long-distance nationalism and hybridity lead to the dynamics of identities. This paper aims to illustrate the dynamics of diasporic identities reflected in their musical performances.