"Karen Williams" is an American concert and opera soprano. In 1985 she won the Metropolitan Opera National Council Auditions; making her stage debut at the Metropolitan Opera later that year as Serena in George Gershwin's Porgy and Bess. She sang that role at the Met again in 1989-1990. She has also performed Serena at Symphony Hall, Springfield with the Boston Concert Opera (1986), the Milwaukee Symphony Orchestra (1998), the Buffalo Philharmonic Orchestra (1999), the Utah Symphony Orchestra (1999), and the Philadelphia Orchestra (2000) among others. In 1986 she made her debut with the Opera Company of Philadelphia as Amelia in Verdi's Un ballo in maschera.

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