This is an EXTREAMLY simplified version of Boyce Avenues mashup of these two songs as i 
couldnt find the full version

Capo 4

(PICK MUTE)
                      Am      C       G       F
I'm friends with the monster that's under my bed
                      Am    C              G  F
Get along with the voices inside of my head
                      Am          C        G  F
You're trying to save me, stop holding your breath
                      Am            C      G  F  
(Strum last chord)
And you think I'm crazy, yeah, you think I'm crazy


(PALM MUTE STRUM)
           Am
I see this life like a swinging vine
C
Swing my heart across the line
G
In my face is flashing signs
F
Seek it out and ye shall find
Am
Oh, but I'm not that old
C
Young, but I'm not that bold
G
I don't think the world is sold
F
I'm just doing what we're told


(PICK MUTE, repeat first verse)

Am C                G
I feel something so right
          F
Doing the wrong thing
Am C                G
I feel something so wrong
          F
Doing the right thing


 (STRUM)
                      Am      C       G       F
I'm friends with the monster that's under my bed
                      Am    C              G  F
Get along with the voices inside of my head
                      Am          C        G  F
You're trying to save me, stop holding your breath
                      Am            C      G  F
And you think I'm crazy, yeah, you think I'm crazy

Well, that's not fair.  Am  C  G  F x4

(Palm mute again)
           Am
I feel the love and I feel it burn
C
Down this river, every turn
G
Hope is a four-letter word
F
Make that money, watch it burn
Am
Oh, but I'm not that old
C
Young, but I'm not that bold
G
I don't think the world is sold
F
I'm just doing what we're told
Am  C                 G
  I feel something so wrong
          F (Single strum)
Doing the right thing


(PICK MUTE, repeat first verse)

Am C                G
I feel something so right
          F
Doing the wrong thing
Am C                G
I feel something so wrong
          F
Doing the right thing

(Strum)
                      Am      C       G       F
I'm friends with the monster that's under my bed
                      Am    C              G  F
Get along with the voices inside of my head
                      Am          C        G  F
You're trying to save me, stop holding your breath
                      Am            C      G  F
And you think I'm crazy, yeah, you think I'm crazy

Well, that's not fair.  Am  C  G  F x4

(Mute strum Am)

Am        Am
Take that money
Am       Am
Watch it burn                 x3
Am          Am
Sink in the river
    Am          Am
The lessons are learned..

Am        Am
Take that money
Am       Am
Watch it burn


                      Am      C       G       F
I'm friends with the monster that's under my bed
                      Am    C              G  F
Get along with the voices inside of my head
                      Am          C        G  F
You're trying to save me, stop holding your breath
                      Am            C      G  F
And you think I'm crazy, yeah, you think I'm crazy

Well, that's not fair.  Am  C  G  F x4