[Intro riff] x2
E|-1----0------0-----3----|
B|-------------0----------|
G|---0-0--0-0--0--0-0--0-0|
D|--2-2--2-2---2-2-2--2-2-|
A|-3-----------2----------|
E|-------------0----------|

[VERSE 1] (You can either keep repeating the intro it use these chords... vary the 
progressions as you want.)
          C                            Em                    
When the streetlights come on and the fireflies flicker,
     C                        Em
I am walking her home making plans.
         C                        Em
With her shoes in her hands, I am watching her dance,
       C                     Em
As the hem of her dress gently kisses the grass.

[Intro riff] x1

Dsus         Am      Fadd9        
 It suddenly rains on us,
D                Dsus            Fadd9~
She is laughing and turns up her hands.

[Chorus 1]
                  C                   G                    Am
Like autumn turns leaves, winter will breathe, cold on our necks, snow in
   Fadd9
our paths.
             C                G                        Am
Wherever she goes, all that I know about us is that beautiful things never 
Fadd9~
last, that's why fireflies flash.

[Intro riff] x2

[Verse 2]
          C                        Em
When this summertime ends, we will not part as friends,
            C                          Em
Things were promised in blood; we have sinned.
            C                          Em
Now there's tears in her eyes as she's screaming goodbyes, 
       C                       Em
I run 'long side the car turning numb to the sound.

[Intro riff] x1

Dsus       Am           Fadd9
I notice a chill in the air,
D           Dsus          Fadd9~
September is creeping up fast.

[Chorus 2]
                  C                   G                    Am
Like autumn turns leaves, winter will breathe, cold on our necks, snow in 
   Fadd9
our paths
             C                G                    Am
Wherever she goes, all that I know about us is that beautiful things never 
Fadd9~
last, that's why fireflies flash.

[Intro riff] x1

[Bridge]
Dsus                 Fadd9
 Innocence didn't mean we're immune to these things,
Am                       G
Let's blame the passage of time.
Dsus                        Fadd9
Love and loss, truth it costs more than I can spare right now.
Am                   G
Maybe it's simpler to lie...

[FINAL CHORUS]
                  C                   G                    Am  
Like autumn turns leaves, winter will breathe, cold on her necks, snow in 
Fadd9
our paths.
             C               G                      Am
Wherever she goes, all that I know about us is that beautiful things never 
Fadd9~
last, that's why fireflies flash.

[INTRO] [keep playing to fade out]
Ooooh.... That's why fireflies flash...
Ooooh....