Input (grade 9): In July 1968, Mizuki released his first single called "Kimi ni sasageru Boku no Uta" and this song was composed by Kanae Wada.
Output (grade 12): Ichiro Mizuki began his solo career in 1968, although his first single "Kimi ni sasageru Boku no Uta" was released as this song was composed by Kanae Wada.