Harry Moses Simeone (May 9, 1911, Newark, New Jersey - February 22, 2005, New York City, United States) was a distinguished music arranger, conductor and composer, best known for arranging the famous Christmas song "The Little Drummer Boy", for which he received co-writing credit. Initiated by his childhood passion for the Metropolitan Opera, Simeone sought a career as a concert pianist and eventually attended the Juilliard School of Music for three years before leaving to begin work at CBS as an arranger for bandleader Fred Waring.