The Boswell Sisters were a popular vocal trio in the 1930s, consisting of sisters Connie, Marjorie, and Helvetia Boswell. They were known for their unique harmonies and innovative arrangements, blending elements of jazz, pop, and swing music. The sisters gained fame through their radio performances and recordings, becoming influential figures in the music industry. Their style featured intricate vocal harmonies and rhythmic phrasing, which set them apart from other groups of the time. The Boswell Sisters collaborated with notable musicians and contributed to the development of vocal jazz. Their legacy continues to inspire artists today, showcasing the enduring appeal of their music.