I didn't write these, they are from http://wiki.illemonati.com.
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Bass (played for the entire song):
C G D A C Bb A Ab G 

C        G           Dm7       Am        C  Bb Am Ab G
 Amnesia was her name. She had beautiful eyes.
C               G        Dm7       Am        C  Bb Am 
 And every word she said, it was a little surprise.

Ab    G C             G          Dm7    Am     C  Bb Am
Can?t remember when I realized I was in love. (La-la-love.)
Ab    G C             G         Dm7      Am 
Can?t remember who it was I was thinking of.
C  Bb Am   Ab G  C
Oh my god? oh my god.

    G             Dm7 Am        C Bb Am       Ab G
The doctor said I had tomato loss.    All right.
    C       G       Dm7           Am            C Bb Am Ab G C
Dr. Amnesia was her name. She had beautiful eyes.
       G              Dm7       Am          C Bb Am        Ab G C
We had spaghetti with long term memory sauce.     All right!
          G        Dm7            Am             C Bb Am
And every word she said, it was a little surprise.