The "Philly Sound" refers to a style of soul music that emerged from Philadelphia in the 1970s. Characterized by lush orchestration, smooth melodies, and rhythmic grooves, it often features strings and horns, creating a rich, polished sound. This genre played a significant role in the development of disco and influenced many artists. Key figures in the Philly Sound include producers Kenny Gamble and Leon Huff, who were instrumental in shaping its distinctive style. They founded Philadelphia International Records, which became a hub for this genre. Notable artists associated with the Philly Sound include The O'Jays, Teddy Pendergrass, and Harold Melvin & the Blue Notes.