The Disappearing Sails is a poetic poem that depicts the scene of ships gradually disappearing on the wide ocean. To match the mood of the poem, here is some suitable background music:

1. "Peerless" - This song has a beautiful melody and dreamy harmonies that can match the beauty and pathos of the poem Emotions match.

2. "A Road Less Traveled" - This song has a melodious melody and deep emotions, which can bring people a warm and melancholy feeling.

3. "The End of the World" - This song has a beautiful melody and lyrics that echo the poem's sentiments about time, life, and loss.

5. "A Winter's Tale" - This song has a melodious melody and soft tone that goes well with the winter scene in the poem and the disappearance of the ship into the snow.

These are just some suggestions, you can choose the most suitable background music according to your own emotions and the atmosphere of the poem.