A. Smith, an American jazz arranger active primarily during the mid-20th century, was a significant contributor to the big band sound. Known for their sophisticated harmonic voicings and innovative sectional writing, Smith’s arrangements blended swing era exuberance with emerging bebop sensibilities. Their work with prominent orchestras, including collaborations with figures like Count Basie and Duke Ellington, showcased a meticulous attention to detail and a flair for dynamic contrasts. Smith’s charts for ensembles such as the "Harlem Renaissance Orchestra" are celebrated for their intricate counterpoint and their role in expanding the melodic and rhythmic possibilities of large jazz ensembles, influencing generations of arrangers.