* To create a lasting memory. A song can be a powerful way to create a lasting memory. When someone listens to a song that is special to them, it can bring back memories of the person who left the song for them and the time that they spent together.
* To provide a source of comfort. Music can be a great source of comfort during difficult times. A person might leave a song for a message as a way to offer comfort and support to someone who is going through a tough time.
* To express gratitude. A song can be a great way to express gratitude for something or someone. A person might leave a song for a message as a way to thank someone for their support or kindness.
* To make someone smile. A song can be a great way to make someone smile. A person might leave a song for a message as a way to cheer someone up or make them feel happy.