Few female singers matched the hard-swinging Anita O'Day for sheer exuberance and skill in all areas of jazz vocals: her splendid improvising, wide range, dynamic tone, and innate sense of rhythm made her one of the most enjoyable singers of the age. O'Day's first appearances in a big band shattered the traditional image of a demure female vocalist by swinging just as hard as the other musicians on the bandstand, best heard on her vocal trading with Roy Eldridge on the Gene Krupa recording "Let Me Off Uptown." After making her solo debut in the mid-'40s, she incorporated bop modernism into her vocals and recorded over a dozen of the best vocal LPs of the era for Verve during the 1950s and '60s. Though hampered during her peak period by heavy drinking and, later, drug addiction, she made a comeback and continued singing into the new millennium.