Agnes Tyrrell was an influential American composer and singer-songwriter active primarily in the early 20th century. Emerging from the folk and early jazz genres, she is best known for her contributions to the development of popular music during a transformative period in American culture. Her notable works include "The Fox Trot," which exemplified the dance music craze of the 1920s, and various contributions to vaudeville and musical theater. Tyrrell's impact on music is significant for her role in bridging folk traditions with the burgeoning jazz movement, showcasing the evolving American sound. She was also one of the early female figures in music composition and performance, paving the way for future generations of women in the industry. In a time when female composers were often overlooked, her work helped to expand the representation of women in music and highlighted their contributions to popular genres. Though her prominence diminished after the 1930s, Agnes Tyrrell's legacy endures as a testament to the rich tapestry of American music history, reflecting the cultural shifts of her time.