Irene Castle (born Irene Foote, 1893-1969) was an influential American dancer, actress, and socialite, best known for her contributions to the popularization of ballroom dance in the early 20th century. While not primarily a music artist, Castle played a pivotal role in shaping the music and dance culture of her time. She was a key figure in the development of the "Castle Walk," a dance style that she and her husband, Vernon Castle, introduced in the 1910s. Their partnership not only revolutionized dance but also significantly impacted the music associated with it, as they collaborated with composers to create danceable music for their performances. Notable works include the popularization of ragtime and jazz standards, particularly through the use of syncopation in dance music. Irene Castle also appeared in several films and was a prominent figure in the social scene of the Jazz Age, influencing fashion and dance trends. Her impact on music and dance extended beyond her performances, as she helped establish ballroom dance as a cultural phenomenon, paving the way for future generations of dancers and musicians.