Masao KOGA who played a critical role in the development of this genre produced works reflecting the influence of ethnic music around the world, including music in Korea where he spent his boyhood, Roma music and western music.
またこのジャンルの発展に決定的な役割を果たした古賀政男は、少年時代を過ごした朝鮮をはじめロマなど世界各地の民族音楽や西洋音楽からの影響も作品に盛り込んでいる。