Mystery Jets

I have a plane,
One of the few
With roundels on its wings.
Lullaby for me and for you,
When it flys high it sings
Rock me to sleep
With que sara,
Dear monde do you suppose?
As I feel my eyelids close,
The otherside is not so far.
I dug a hole
Under the ground
And made myself a den.
It's there that I can be found,
Not if you return but when.
There's a place
A place called Hell,
Spend some time there,
In the dark I cast a spell
To bury all,
All of my fears.
Oh D... (?)
Oh D...
Oh D...
I would but I couldn't spell your name.
Once I fell from a great height,
'Are you ready? I've come for you'
A voice spoke from the graveyard (?)
'Not yet' I said,
'Got some things to do.'