What is ends song?

As an AI language model, I'm not sure which song you are referring to. However, an "end song" could refer to the last song on an album or the final song played at the end of a movie, TV show, or theater play. The purpose of an end song is often to bring a sense of closure to the audience and reflect on the themes or emotions presented in the work. An end song can also be used to leave a lasting impression and create a memorable conclusion to the experience. Many popular end songs have become iconic and are often associated with the work they end, such as "My Heart Will Go On" from Titanic or "Don't Stop Believing" from The Sopranos.