Etta James, from just about any stage of her career. Faves: Watch Dog, Deep in the Night (play this on a rainy night in the car...), I'd Rather Go Blind, My Mother in Law, Laying Beside You, any cover of an Otis Redding tune (she knew how to pick 'em and how to respect 'em.) That rich molasses voice. Goddamn, she had it.