Along with enka-shi Haruo Oka's 1939 debut, his debut had a big impact on Japanese popular music because Japanese popular ryūkōka music of that time was mainly sung by classical music singers such as Ichiro Fujiyama and Noriko Awaya.
Oka River | Oka | Oka Crisis | OKA | Kiyoshi Oka | Anukokunda Oka Roju | OKA 4wd | Michele Oka Doner | Haruo Oka |