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.
Ōishi Yoshio | Oishi Yoshio | Yoshio Masuda | Yoshio Machida | Yoshio Kondo | Yoshio Kojima | Yoshio Utsumi | Yoshio Urushibara | Yoshio Shinozuka | Yoshio Nishina | Yoshio Nakamura | Yoshio Nakagawa | Yoshio Koide |