"17-sai" (17才 (じゅうななさい), Jūnana-sai, lit. "17 Years Old") (also known as "Seventeen") is the debut single by Japanese singer Saori Minami. Written by Mieko Arima and Kyōhei Tsutsumi, the single was released by CBS Sony on June 1, 1971. Tsutsumi based the song on "Rose Garden" by Lynn Anderson when he learned it was Minami's favorite song. Arima, who was 40 years old at the time, surprised her close friends when she was able to express the feelings of a 17-year-old girl in the song's lyrics.