The responsible manager and elder brother of the Baker Brothers piano duo. He strategically hires Susie Diamond to revive their act and strictly forbids Jack from pursuing her to protect their business stability. He becomes increasingly controlling over their setlist, leading to a physical fight with Jack. After Jack quits, Frank shifts to teaching piano and accepts his brother's departure, acknowledging his past jealousy of Jack's carefree nature.
Frank recruits Susie as the group's professional singer.
Frank decides to hire a female singer, and after Susie's audition he hires her for the Baker Boys' act.
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