capo: 1st fret
Intro: Bm
Verse1:
Bm                 D E    Bm            E D
An invisible prison    encircles my mind
       Bm          D E   Bm               E D
I wait for a vision,   I search for a sign
     Bm            D E    Bm             E D
An invisible prison    is built around me
      Bm          D E            Bm         E D
There may be a God     but there isn't a key
Prechorus:
E                  Bm
I gotta break-out, I have to be free
E                  F#
I gotta break-out, it's stifling me
Help me
Chorus:
Bm D E     Bm                    E D
      I gotta make a breakthrough
Bm D E     Bm                    E D
      I gotta make a breakthrough
Bm D E     Bm                    E D
      I gotta make a breakthrough
Bm D E     Bm                    E D
      I gotta make a breakthrough 
B  D E   B  D E   B  D E   B  D E
Now!
Postchorus:
Bm Esus4 G A Bm
Bm                 Esus4             G
I must find a way, I must find a way
       A                 Bm
I must find a way out of here
(B  D E   B  D E   B  D E   B  D E) x2
Verse2:
Bm                 D E    Bm            E D
An invisible prison,    I cannot escape
Bm                   D E       Bm                 E D
https://www.coveralia.com/acordes/breakthrough--live-at-the-bbc-27-07-1972--atomic-rooster.php
With walls I can't see,   with walls I can't break
Bm                 D E     Bm           E D
An invisible prison,   how can I be free?
Bm               D E        Bm           E D
There isn't a God,   for the jailer is me
Prechorus:
E                  Bm
I gotta break-out, I have to be free
E                  F#
I gotta break-out, it's stifling me
Help me
Chorus:
Bm D E     Bm                    E D
      I gotta make a breakthrough
Bm D E     Bm                    E D
      I gotta make a breakthrough
Bm D E     Bm                    E D
      I gotta make a breakthrough
Bm D E     Bm                    E D
      I gotta make a breakthrough 
(B  D E   B  D E   B  D E   B  D E) x2
Now!
Postchorus/Outro:
Bm Esus4 G A Bm
Bm                 Esus4             G
I must find a way, I must find a way
       A                 Bm
I must find a way out of here
Bm                       Esus4                        G
There's got to be a way, yeah, there's got to be a way
       A                         Bm
There's got to be a way on outta here, babe, yeah
I can't find the way, I can't find the way      /WITH THE
I can't find the way outta here                / SAME CHORDS
There must be a way, there must be a way      /  AS ABOVE 
There must be a way outta here               /   TIL FADE:
                                             \   
Let me out, let me out, let me out please     \  Bm Esus4
                                               \ G A Bm
Oh, there must be a way, there must be a way
There must be a way outta here