Nancy Wilson, the Grammy-winning “song stylist” and torch singer whose polished pop-jazz vocals made her a platinum artist and top concert performer, has died.

Wilson, who retired from touring in 2011, died after a long illness at her home in Pioneertown, a California desert community near Joshua.

Her manager, Devra Hall Levy, told The Associated Press late Thursday night. She was 81.

Influenced by Dinah Washington, Nat “King” Cole and other stars, Wilson covered everything from jazz standards to “Little Green Apples” and in the 1960s alone released eight albums that reached the top 20 on Billboard’s pop charts.

Sometimes elegant and understated, or quick and conversational and a little naughty, she was best known for such songs as her breakthrough “Guess Who I Saw Today” and the 1964 hit ”(You Don’t Know) How Glad I Am,” which drew upon Broadway, pop and jazz.

She resisted being identified with a single category, especially jazz, and referred to herself as a “song stylist.”

Wilson also had a busy career on television, film and radio, her credits including “Hawaii Five-O,” ″Police Story,” the Robert Townshend spoof “Meteor Man,” and years of hosting NPR’s “Jazz Profiles” series.

Active in the civil rights movement, including the Selma march of 1965, she received an NAACP Image Award in 1998.

Wilson was married twice — to drummer Kenny Dennis, whom she divorced in 1970; and to Wiley Burton, who died in 2008.  Wilson had three children.