INTRO
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THE INTRO,THE FIRST VERSE, AND THE PRECHORUS ARE PLAYED THE SAME WAY, IN TOTAL YOURE
PLAY THE FIRST PART 10 TIMES. CHECK THIS VIDEO TO FIGURE OUT WHAT I MEAN.    
http://www.youtube.com/watch?v=t2BAPt58zrc

CHORUS

        EM  C     G            D
In my head, I see you all over me.
        EM  C     G           D
In my head, you fulfill my fantasy.
        EM            C         G   D
In my head, You'll be screaming ohhhh
        EM  C           G
In my head, it's going down.
       D
It's going down.


In my head, Yeah, In my head, Oh yeah.
(PLAY THIS ONCE)

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|----0-----0-----0-----0-----0-----0-----0-----0---|
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|--------------3-----3-----------------------------|
|--0-----0-----------------3-----3-----2-----2-----|

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|------3-----0-----3-----0-----3-----0-----3-----0-|
|----0-----0-----0-----0-----0-----0-----0-----0---|
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|--------------3-----3-----------------------------|
|--0-----0-----------------3-----3-----2-----2-----|


2ND VERSE AND  THE 2ND PRECHORUS ARE PLAYED  WITH THE SAME CHORD PATTERN AS THE CHORUS,
FIGURE OUT THE STRUMMING.


CHORUS

        EM  C     G            D
In my head, I see you all over me.
        EM  C     G           D
In my head, you fulfill my fantasy.
        EM            C         G   D
In my head, You'll be screaming ohhhh
        EM  C           G
In my head, it's going down.
       D
It's going down.

Bridge

SAME CHORD PATTERN, JUST MUTE THE NOTES

Break it down. Ay-oh-oh Come on. Ay-oh ooh Ay-oh.
You singing to me baby in my head right now. Ay-oh. Ay-oh ooh. Come on.
He'll be screaming out when it all goes down


IN THE LAST PRECHORUS IS THE SAME CHORD PATTERN (AGAIN) BUT YOURE JUST GONNNA PLAY EACH
ONCE THE FIRST TIME, THE SECOND TIME ALL THE CHORDS ARE GONNA BE PALM MUTED.

CHORUS.


 HOPE THIS HELPED. :)