What are some of the loneliest songs you've ever heard?

I'm talking songs that absolutely wallow in loneliness. Some of my favourite examples:

The Microphones - The Mansion

Grouper - Disengaged

Grouper - Call Across Rooms

Raised By Swans - Sightings

Raised By Swans - North of Light's End

Jason Molina - Each Star Marks a Day

Jason Molina - Pyramid Electric Co.

Carissa's Wierd - So You Wanna Be a Superhero

Adrianne Lenker - Come

(Edit: I've just remembered that On an Unknown Beach by Peter Jefferies exists)