Shoichi Kokubun (Yujiro Ishihara) is a roughneck street musician, who has a brother that is determined to propel him into stardom. In attempt to catch the attention of a popular jazz band, his brother appeals to their manager who has the power to make him a star. In a graphic portrayal of love, betrayal and success, Shoichi brews up a storm with a 'rat-a-tat-tat' on the drums.
Shoichi Kokubu

Eiji, Shoichi's brother

Sadayo, Shoichi's mother

Miyako Fukushima

Shinsuke, Miyako's brother

Aiko, Miyako's mother

Midori Shima

Zenzo Shima

Tokiko Arima

Mary Oka, the dancer

Charlie Sakurada, the drummer
Toru Sakyo, the critic

Mochinaga

Taneda

Ken
Yoshida
Hase
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