There are two main covers of Crazy by Gnarls Barkley out there. The one from blogotheque (on the streets of Paris) and the one from BBC Radio 1 Live Lounge. For the first one keep the chords as is. For the second one, transpose two half steps (-2) down.
Intro -x4-: C / Csus4
Em G Gsus4
I remember when, I remember, I remember when I lost my mind
G C Csus4
There was something so pleasant about that phase
C B7 B7sus4 B7
Even your emotions did not echo in so much space
Em G Gsus4
And when you’re out there, out there I’m out of touch babe
G C Csus4
Its probably cos I didn’t know enough
C B7 B7sus4 B7
I just knew too much
Em Esus4 Em G Gsus4 G
Does that make me crazy... does that make me crazy
G C C/Bbass Am Em
Does that make me crazy... does that make me crazy yeh
E C Csus4
I heard that you’ve been having the time of your life
C E G Gsus4 G G/F#bass
Don’t think twice, don’t think twice that’s my only advice
Em G Gsus4
Who do you, who do you, who do you, who do you think you are?
G C Csus4
Hah hah bless your soul
C B7 B7sus4 B7
Well you think you’re in control? Yeh well
B7 Em Esus4 Em G Gsus4 G
I think you’re crazy... yes I think you’re crazy
G C C/Bbass Am Em
Oh I think you’re crazy... oh I think you’re crazy yeh
E C Csus4
They had the heart to lose their lives out on a limb
C E G G/F#bass
And all I remember is thinking, I want to be like them
Em G Gsus4
Since I was little, ever since I was little it looked like fun
G C Csus4
And it's no coincidence I've come
C B7 B7sus4 B7
And I can die when I'm done
B7 Em Esus4 Em G Gsus4 G
So maybe I'm crazy... or maybe you're crazy
G C Csus4 B7 B7sus4 B Em
Yeh maybe we're crazy... probably...
