Key is C minor. For effect, find a waltz-y sort of rhythm. 
 

Ab           Cm        Bb           F
  God rest his head Sunday afternoon
Ab                Cm      Bb         F         Ab
  And the wicked in me is surely the wicked in you
         Cm           Bb         F
Pray to a ghost that we've never met
Ab               Cm              Bb
  Time turns for a cure from the scientists for
Ab6      Cm       Bb
 Madness,  madness, of the heart
Ab6              Cm           Bb
 But you knew it,  you knew it  from the start

Ab               Cm           Bb                    F
  And Hawking will tell us no tall tales this spring
Ab                  Cm          Bb                 F
  Our minds hold the chaos that started everything
Ab               Cm       Bb                 F
  Maybe it's fate, as the sadness takes hold
Ab                     Cm                 Bb             F
  Still stars through a window, will they ever know this

Ab6      Cm       Bb
 Madness,  madness, of the heart
Ab6              Cm           Bb
 But you knew it,  you knew it  from the start
Ab6               Cm      Bb
 There's a madness, a madness of the heart
Ab6             Cm          Bb
 But you knew it, you knew it from the start

F         Fm     Cm           Bb
  Stare a sleepy smile into a sun beam
F         Fm      Cm          Bb
  Is this nothing more than a daydream?
F    Fm           Cm       Bb
  Colored stained glass cathedral
F     Fm    Cm              Bb
  Confess a past that won't let you go

Ab            Cm        Bb            F
  God rest your head Sunday afternoon
Ab                Cm      Bb     F
  And the wicked in me is surely coming through
Ab        Cm                Bb    F
  Pray to a ghost that I've never met
Ab                    Cm       Bb         Ab6     Cm     Bb
  Still searching for some way out of this  mess 
               Ab6     Cm     Bb
It's the heart
It's the heart
Ab6               Cm        Bb
 There's a madness, a madness in the stars
Ab6             Cm           Bb
 But you knew it, you knew it from the start
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