How to read tablature?
Intro - strum or fingerpick, x2 -:

    Eb             Cm            Ab               Bb 
xA|-------3-----|-------0-----|-------0----0~-|-2-----|
xE|----0-----0--|----0-----0--|----1------1---|---3---|
xC|-0---------0-|-0---------0-|---------------|-----2-|
xG|-------------|-------------|-2-------------|-------|

Verse:
Eb               Cm                 Ab 
I remember your bare feet down the hallway
  Bb                    Eb 
I remember your little laugh
                 Cm 
Race cars on the kitchen floor
        Ab            Bb                         Eb   - Intro part - Cm  Ab  Bb 
Plastic dinosaurs, I love you to the moon and back

Verse
Eb               Cm                Ab                 Bb                  Eb 
I remember your blue eyes looking into mine like we had our own secret club
               Cm             Ab             Bb                       Eb 
I remember you dancing before bed time then jumping on me waking me up
                     Cm 
I can still feel you hold my hand
Ab           Bb                       Eb 
Little man, from even that moment I knew
                           Cm 
You fought it hard like an army guy
  Ab                      Bb 
Remember I leaned in and whispered to you

Chorus:
Ab                  Bb 
Come on baby with me
                    Eb      Ab 
We're gonna fly away from here
    Ab       Bb          Eb     Cm  Ab  Bb 
You were my best four years

Verse:
Eb              Cm                  Ab 
I remember the drive home when the blind hope
          Bb                      Eb 
Turned to crying and screaming, "Why?"
                        Cm 
Flowers piled up in the worst way
             Ab                   Bb 
No one knows what to say about a beautiful boy who died

Verse:
Eb                    Cm 
And it's about to be Halloween
             Ab            Bb                        Eb 
You could be anything you wanted if you were still here
               Cm              Ab 
I remember the last day when I kissed your face
  Bb 
I whispered in your ear

Chorus:
Ab                  Bb 
Come on baby with me
                    Eb      Ab 
We're gonna fly away from here
Ab                      Bb                          Eb 
 Out of this curtained room in this hospital grey
                 Ab 
We'll just disappear
                  Bb 
Come on baby with me
                   Eb       Ab 
We're gonna fly away from here
    Ab       Bb         Eb 
You were my best four years

- Intro part -

Bridge:
            Ab                Bb                Eb 
What if I'm standing in your closet trying to talk to you?
          Ab                Bb                    Eb 
What if I kept the hand me downs you won't grow into?
              Ab                   Bb             Eb 
And what if I really thought some miracle would see us through?
                Ab           Bb                Ab           Bb - once -
But what if the miracle was even getting one moment with you

Chorus:
- Ab -               Bb 
Come on baby with me
                   Eb       Ab 
We're gonna fly away from here
                  Bb 
Come on baby with me
                   Eb       Ab 
We're gonna fly away from here
    Ab       Bb         Eb 
You were my best four years

Outro:
Eb               Cm                 Ab 
I remember your bare feet down the hallway
  Bb                        Eb 
I love you to the moon and back