A Letter, Written

I wrote a letter that I'll never send,
I wrote some music that I'll never play:
Some souvenirs from when the world upend
-Ed; here I am still wishing you would stay.
These words and music, writing -- how I pray
To exorcize the ghosts that cause me grief,
A loss expected, unexpected thief. 

For Sadje’s WDYS prompt from this week (image below).