The "Deep In My Heart Dear' 9231 Player Piano Word Roll, made in the United States, is a vintage musical instrument that allows piano players to perform the song by following along to the pre-recorded music on the roll. This word roll, which is compatible with player pianos, provides a self-playing experience that reproduces the melody and rhythm of the tune, making it a unique and enjoyable way for pianists to play this classic song. Perfect for music enthusiasts looking to add a nostalgic touch to their piano playing experience.