Wikipedia : This day (November 23, 2006), in Los Angeles, California, died Anita O’Day, an American jazz singer.
@allmusic : Few female singers matched the hard-swinging and equally hard-living Anita O’Day for sheer exuberance and talent in all areas of jazz vocals. Though three or four outshone her in pure quality of voice, her splendid improvising, wide dynamic tone, and innate sense of rhythm made her the most enjoyable singer of the age.
@last.fm : O’Day is admired for her sense of rhythm and dynamics, and her early big band appearances shattered the traditional image of the “girl singer”. Refusing to pander to any female stereotype, O’Day presented herself as a ‘hip’ jazz musician, wearing a band jacket and skirt as opposed to an evening gown.