This is a simpler version of the song. It is basically the same, but it's easier 
to play. It sounds a little different, but it's pretty basic chords.
Hope you enjoy it! God bless -Leigh

Chords: Bm: X24432 (also played as 004432)
Bm*: 004030
G: 320003
Em: 022000
D: 000232
E7: 020100
D/F#: 200233
A7sus4: 002030
A7: 002020

Capo 5
Intro: Bm, Bm*, G, Bm, Bm*, Em

Verse One:

Bm       Bm*         G
Can't believe that I did it again
Bm        Bm*        Em          Bm
Wake me up from this nightmare
            Bm*      G           D
'Cause this monster's wasting me away and
E7              G
Taking my days 
Bm    Bm*   G               Bm         Bm*      Em
Every day I live a bit less; one night leads to another
Bm        Bm*  G                D   E7    G
Even if I went back, would they recognize me? 
    E7       G      
Or criticize me?

Chorus 1:
D                                          G
Who are you that lies when you stare in my face
 E7             G                       D         
Telling me that I?m just a trace of the person I once was
             G                    E7                     G
Cause I just can't tell if you're telling the truth or a lie
E7                  G
On you I just can't rely
E7                G            (pause)
After all you're just a piece of    glass 

Repeat intro

Verse two:

Bm      Bm*          G         Bm       Bm*    Em
Still I control this nightmare, when I call it answers
Bm          Bm*     G                E7            G
But I can't tell it when to come, or when to stay

Repeat chorus 1

D/F#        G
Don?t talk, listen
E7      G
Hold me tighter
E7                      G
Stay with me just for a while
E7                   G
Until the sun shines stay with me
 (E7) D/F#           A7sus4  A7
Just give me one more day

Chorus 2:
D                                          G
Who are you that lies when you stare in my face
E7              G                       D    
Telling me that I?m just a trace of the person I once was
                    G      E7                      G
Cause we're not the same, you're just a picture of me
E7                       G      E7                       G
You?re gone as soon as I leave; you've lived my life for me
E7                 G               D
And you're no more than a piece of glass
E7                   G              D 
You're no more than just a piece of glass

Outro: Bm, Bm*, G, D, D/F#, G

Piece of Glass by
Caedmon's Call
written about bulimia