All credits go to Ataraxia.
http://atxconsulting.com/posts/Dr._Horrible_--_Brand_New_Day_--_Guitar_Chords_Tabs/


Fm                 Db                       Fm
This appeared as a moral dilemma, 'cause at first
                   Db                     Bbm
it was weird how I swore to eliminate the worst
                   Db                      Bbm
of the plague that devoured humanity. It's true
                   Eb                         Db
I was vague on the how, so how can it be that you
                  Ab
have shown me the light?
 
 
       Fm                     Fm/E
It's a brand new day, and the sun is high.
        Db                            Bbm   Eb
All the birds are singing that you're gonna die.
      Fm               Bbm
How I hesitated, now I wonder why.
       Gb
It's a brand new day.
 
(Notes only)
Gb F Eb C Eb Bb Ab F
 
Fm                     Db                        Fm
All the times that you beat me unconscious, I forgive.
                    Db                                 Bbm
All the crimes, incomplete, listen, and honestly, I'll live. 
                    Db                    Bbm 
Mister Cool, Mister Right, Mister Know-It-All, is through,
                    Eb                         Db
now the future's so bright and I owe it all to you,
                  Ab
who showed me the light.
 
Fm                            Fm/E
It's a brand new me, I've got no remorse.
        Db                    Bbm      Eb
Now the water's rising, but I know the course.
          Fm                     Bbm
I'm gonna shock the world, gonna show bad horse
       Gb
it's a brand new day.
 
(Aside from the Fsus these are just the bass notes)
 
    Db                 C
And Penny will see the evil me.
      Eb                      Fsus F
Not a joke, not a dork, not a fail-ure.
    Db                   C
And she may cry, but her tears will dry
       F                      C                 
when I hand her the keys to a shiny new Australia.
 
       Fm                       Fm/E
It's a brand new day. Yeah, the sun is high.
        Db                          Bbm   Eb
All the angels sing, because you're gonna die!
    Fm                          Bbm       Fm
Go ahead and laugh! Yeah, I'm a funny guy.
           Bbm         Fm   Bbm
Tell every one goodbye!
       Gb            Fm
It's a brand new day.