Omega Tribe (Japanese: オメガトライブ; sometimes stylized as Ωmega Tribe) was a Japanese soft rock and city pop project that was led by producer Koichi Fujita, with the bands being handled by industry veterans Tetsuji Hayashi, Tsunehiro Izumi, and Hiroshi Shinkawa at different points of the band's existence. The project was active from the early 1980s to the late 1990s, having several hits during its lifespan with the help of lyricists, composers, and arrangers. The band underwent several core member changes as well as name changes, with the band changing vocalists three times with the introductions of Kiyotaka Sugiyama in 1983, Carlos Toshiki in 1986, and Masahito Arai in 1993. The band has also had many offshoot bands that have stemmed from members collaborating. Many of the band's works were focused on themes of summer, sea, and resorts, making them one of the leading bands with summer songs along with Southern All Stars and Tube. They have also been called one of the pioneers of Japanese soft rock in the 1980s.