Adolf Gustaw Sonnenfeld (1874–1940) was a notable Polish composer and conductor, primarily associated with the classical music genre. Born in Warsaw, he was influenced by the rich musical traditions of his homeland and the broader European classical scene. Sonnenfeld studied at the Warsaw Conservatory and later in Berlin, where he absorbed various musical styles, including Romanticism and early modernism. Among his notable works are symphonic compositions, chamber music, and songs that reflect his deep understanding of orchestration and melodic development. His "Symphony No. 1" and various choral pieces gained recognition for their emotional depth and technical proficiency. Sonnenfeld also contributed significantly to Polish music through his efforts in promoting the works of contemporary composers and engaging with the musical community. Despite his relatively limited international fame compared to some of his contemporaries, Sonnenfeld's impact lies in his role as a bridge between Polish folk traditions and classical music. His compositions continue to be celebrated for their expressive qualities and craftsmanship, marking him as an important figure in Polish music history during the early 20th century.