Lucrecia Roces Kasilag (1917-2008) was a prominent Filipino composer and music educator known for her significant contributions to the development of Philippine music. She is often celebrated for her ability to blend traditional Filipino folk elements with Western classical music, creating a unique sound that helped to elevate the status of Filipino music on the global stage. Kasilag's notable works include "Toccata for the Piano," "Dances of the Emerald Isle," and "Kundiman ng Luha," among others. Her compositions often featured indigenous instruments and themes, showcasing the rich cultural heritage of the Philippines. She was also an advocate for music education, serving as a professor at the Philippine Women's University and later as the dean of the College of Music at the University of the East. Kasilag's impact on music extends beyond her compositions; she was a founding member of the Philippine Society for Music Education and played a crucial role in promoting music literacy in the country. Her legacy continues to influence contemporary Filipino composers and musicians, making her an essential figure in the history of Philippine music.