Basie, Count (William Basie)ba’se, 1904–84, American jazz pianist, bandleader, and composer, b. Red Bank, N.J. After working in dance halls and vaudeville in New York City, Basie moved to Kansas City, a major jazz center. There he joined Walter Page’s Blue Devils in 1927, moving to Bennie Morton’s band in 1929. He formed his own band in 1935, and for 40 years it has produced a distinctive sound marked by a powerful yet relaxed attack. Basie’s provocative piano style is characterized by a predominant right hand. Among the many pieces he has composed for his band is “One O’Clock Jump.”