Middle-earth-related things belong to Tolkien, the original song belongs to the Proclaimers.

When you go will you send back
A letter from Undying Lands?
Take a look o'er the ocean
From Grey Havens to Valinor

After I destroyed the Ring four years ago
I'd spend the evening thinking about
How I lost my finger, oh
Now I'm crossing the ocean, going to Aman
I wonder how I'll get on when I reach the promised land?

When you go will you send back
A letter from Undying Lands?
Take a look o'er the ocean
From Grey Havens to Valinor

I've looked at all the maps
Tried hard to imagine
The way you felt the day you left
From Bagshot Row to Orodruin
I should have warned you
I should have told you
But you know the Council's timing
We waited far too long

When you go will you send back
A letter from Undying Lands?
Take a look o'er the ocean
From Grey Havens to Valinor

Bag End no more, Rivendell no more
Gondor no more, Shire no more
Bag End no more, Rivendell no more
Gondor no more, Shire no more
Bag End no more, Rivendell no more
Gondor no more, Shire no more

The ringbearers are gone
Never to return
The age of Men's beginning
Elves have no place here
Will I not miss the Shire?
I think we all know I'll miss it
Do we have to leave middle earth
To prove how much it hurts?

When you go will you send back
A letter from Undying Lands?
Take a look o'er the ocean
From Grey Havens to Valinor

Buckland no more, Brandywine no more
Hobbition no more, Bree no more
Buckland no more, Brandywine no more
Hobbition no more, Bree no more
Buckland no more, Brandywine no more
Hobbiton no more

Bag end no more