Saw the chorded version of this & made it better & took away the capo for those of 
you who haven't gotten around to buying one yet.
& I know it's supposed to be played in Drop Db & all that, but this is to make 
things a bit easier for people.
Now, I'd play this in all 5th chords [or lazy barre chords] because it sounds better that way.

Intro.

Bbm (x13321@1)e|-1--1---1
B|-2------2
G|-3----1-3
D|-3------3          
A|-1------1
E|-x------x

F#E|-2-2---1 (244322@1)B|-2-----2
G|-3--1--3
D|-4-----3
A|-4-----1
E|-2-----x

Repeat this pattern for the first verse to mimick the piano sound, improvise 
around the picked notes, see what you like to play.

Verse 1:
Bbm (x13321@1)                                
Took a bite out of a mountain range,
F#thought (244322@1)my teeth'd break, the mountain did.
Bbm (x13321@1)                   
Let's go, I want to go, 
F#all (244322@1)the way to the horizon.

Bb5 (x133xx@1)                                 F5I (133xxx@1)took a drink out of the ocean and
F#5 (244xxx@1)                                 C#5I'm (x133xx@4)treading water there before I drown.
Bb5 (x133xx@1)                    F5Let's (133xxx@1)dive, I wanna dive,
F#5 (244xxx@1)                      C#5To (x133xx@4)the bottom of the ocean.

Ab5I (133xxx@4)took a ride, I took a ride,
           Bb5 (x133xx@1)                C#5I (x133xx@4)wouldn't go there without you.
Ab5Let's (133xxx@4)take a ride, we'll take a ride,
          Bb5 (x133xx@1)                      C5I (x355xx@1)wouldn't leave here without you.

Chorus 1:
C#5 (x133xx@4)          C5C#5          C5 (x355xx@1)Bb5I (x133xx@1)am a mountain. I am the sea.
Bb5 (x133xx@1)                            C5You (x355xx@1)can't take that away from me.
C#5 (x133xx@4)          C5C#5         C5Bb5
I am a mountain. I am the sea.
Bb5 (x133xx@1)                            Ab5You (133xxx@4)can't take that away from me.

Ab5Bb5            F#5'Cos (244xxx@1)you tear us apart
             C#5 (x133xx@4)         Ab5With (133xxx@4)all the things you don't like.
    Bb5 (x133xx@1)      F#5You (244xxx@1)can't understand 
    C#5 (x133xx@4)     Ab5That (133xxx@4)I won't leave,
     Bb5 (x133xx@1)         F#5'Til (244xxx@1)we're finished here,
               Ab5And (133xxx@4)then you'll find out,
Bb5 (x133xx@1)            F#5 (244xxx@1)  C#5Where (x133xx@4)it all went wrong.

Verse 2: [Same as First Verse]

I wrote a note to the jungle and
They wrote me back that I was never crowned,
King of the jungle so,
There's an end to my horizon.

I took a ride, I took a ride,
I wouldn't go there without you.
Let's take a ride, we'll take a ride,
I wouldn't leave here without you.

Chorus 2:
C#5 (x133xx@4)          C5C#5          C5 (x355xx@1)Bb5I (x133xx@1)am a mountain. I am the sea.
Bb5 (x133xx@1)                            C5You (x355xx@1)can't take that away from me.
C#5 (x133xx@4)          C5C#5         C5I (x355xx@1)am a mountain. I am the sea.

Ab5Bb5            F#5'Cos (244xxx@1)you tear us apart
             C#5 (x133xx@4)         Ab5With (133xxx@4)all the things you don't like.
    Bb5 (x133xx@1)      F#5You (244xxx@1)can't understand 
    C#5 (x133xx@4)     Ab5That (133xxx@4)I won't leave,
     Bb5 (x133xx@1)         F#5'Til (244xxx@1)we're finished here,
               Ab5And (133xxx@4)then you'll find out,
Bb5 (x133xx@1)            F#5Where (244xxx@1)it all went wrong.

Fill:
Bbm Ab C# Bbm Ab F# Bbm Ab C# Ebm F#
[Play these as fifths or chords, it's up to you!]

Bridge:
Bb5 (x133xx@1)             Ab5 (133xxx@4)C#5Nothing (x133xx@4)lasts forever,  
F#5 (244xxx@1)          C#5 (x133xx@4)Except you and me.
Ab5 (133xxx@4)           C#5You (x133xx@4)are my mountain,
           F#5 (244xxx@1) Eb5You (xx134x@1)are my sea.
Bb5 (x133xx@1)              Ab5 (133xxx@4)   C#5Love (x133xx@4)will last forever,
F#5 (244xxx@1)         C#5 (x133xx@4)Between you and me.
Ab5 (133xxx@4)                  C#5You (x133xx@4)are my mountain,
F#5 (244xxx@1)           C5You (x355xx@1)are my sea.

Chorus 3:
C#5 (x133xx@4)          C5C#5          C5 (x355xx@1)Bb5I (x133xx@1)am a mountain. I am the sea.
Bb5 (x133xx@1)                           
You can't take that away from me.
C#5 (x133xx@4)                C#5I (x133xx@4)am a mountain,   I am the sea.
C#5I (x133xx@4)am a mountain,   I am the sea.

And that is Mountains. Enjoy.