Harry Sosnik (1898-1990) was an American bandleader and arranger, primarily known for his contributions to jazz and popular music during the early to mid-20th century. Born in New York City, Sosnik gained prominence in the 1930s as a musical director and arranger for various radio shows and orchestras. One of his most notable works includes his arrangements for the popular radio program "Your Hit Parade," where he helped shape the sound of popular music during the era. Additionally, Sosnik is recognized for his work with big bands and orchestras, contributing to the swing music movement. Sosnik's impact on music can be seen in his innovative arrangements that blended jazz elements with popular tunes, making them accessible to a broader audience. He also played a key role in transitioning music from live performances to radio broadcasts, which transformed the way music was consumed in America. While he may not be as widely known as some contemporaries, his work laid the groundwork for future generations of arrangers and bandleaders, influencing the development of American popular music.