Joni Sledge was best known for being part of the 1970s group, Sister Sledge. Along with her sisters Debbie, Kim, and Kathy, she was taught to sing by her grandmother, Viola Williams, a former lyric soprano opera singer. Under Viola's guidance, they sang at their family church and later performed at charity and political events. In 1971, the sisters formed the group Sister Sledge and for the next several years, they had minor success. The group's fortunes turned when they met Bernard Edwards and

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