Black tar est le thème de combat usuel dans Xenoblade Chronicles X. Ce thème est composé par Hiroyuki Sawano, avec des paroles écrites et interprétés par mpi et David Whitaker. Dans le jeu, le thème est séparé en 2 parties: les 13 premières strophes font office de thème de combat au sol, les 7 dernières comme thème de combat à bord d'un Skell.


Not even a distant land
We're stuck on a whole different planet
No peace lookin' at the sky
Trouble's always all around so we stay quick with
the guns and cannons
Standing as long as we can until we get all Dolls up
Then call all bets off
We'll blow through your tar
Dealing with lives messed up
On a sea of dark matter
Every minute matters
Living while other lives shatter
Seeing ghosts scatter
As they pour out
We can handle them
It's the tar taking over that came unexpected
Hard to accept it
Getting marked for death
Seeing friends snatched and darkly possessed
The tar inside stealing the body and breath
Till only a shell is left
Witness to Hell in the flesh
A fight to the death
Screaming Where's the relief?
Maybe no more sleep
All swallowed in grief
Images Start to stalk like a beast
I hear voices but no one talking to me...
It's like I'm washing away
All my peaceful days
Anyway Anyhow
Nothing left of that scene
If you are losing your way
You need some protection
Black tar, it gets you
Where ever you go
They could find you quickly, it's sticky
However you try to tough it out
You just can't beat them
They said seek to find the field So we can sharpen skills
But Now we can only feel
All the pain of the danger being real
And we may have to kill
Just to stay alive
Cause They've taken away close mates
And we don't know our own fates
We've been tasked to protect and take on ghosts
But now this black tar is new
And the damage is quick
It moves really fast
Plus it covers everything
This wasn't in the profile
So Now We've got to find a way to win or we die out
Living life on the run
With a hand on a gun
Where's the exits
We can't go back where we came from
We can't go back where we came from
Get armed, Don't look back
Shoot them with your guns
Yes, Get up, Don't give up
Shoot them
All the power you got
Hello... ? Is this thing on? Am I all alone?
Is anyone there?
I need a bigger gun Help if you can
Please wake me up
Not to sound cliche
But this world sucks!
So close it's a voice I'm hearing
Overwhelms me, Can't stop bleeding
Show me ........ in the fog
How many times you gotta kill your friends?
How do you feel you gotta shoot their head?
Just like the endless war
How do I know?
This godamn stuff is all around
How can I get out?
This nightmare I've got to escape
Just screaming
You hear them over and over
You will get running
So we can find the way to get out
We're stuck on a different planet
A lot more than we can manage
But we gotta keep on standing
We're stuck on a different planet
A lot more than we can manage
But we gotta keep on standing
Just want live in peace yet
Black tar's gonna keep us restless
Running just to keep our own breaths
People are dripping black tar
It's taken a ship down so far
Don't wanna lose hope
But here we are
Wishing to see the sunrise
But the sun doesn't rise in this sky
Black Tar covers most eyes