INTRO: F D Gm F 
C     Dm  F      Am     Bb     C      F     C      F
These are happy, happy, happy, Summer days, summer days.

#1.
F                    Dm       G                 C
When the morning sun promises another wonderful day and 
     F          Am            Bb
good fortune is all along the way.
C         Gm       Dm          Bb             F
When your heart is filled with gladness cause true love 
            Bb
has come to stay.
Gm        F      Am     Bb     C      F     Bb     F
These are happy, happy, happy, Summer days, summer days.

#2.
F                Dm           G              C
Every kiss, will take us to a new world to explore..
         F               Am           Bb   C
bringing thrills that we never knew before.
G        Dm               Bb                F         Am
When the one you love can show you What's behind that magic 
Bb
door..
Gm        F      Am     Bb     C      F     C      F 
These are happy, happy, happy, Summer days, summer days.
F     Bb  F      Am     Bb     C      F        Db
These are happy, happy, happy, Summer days..

#3.
Db    Gb                   Ebm             Ab         Db
Look around you, there's a rainbow in that watermelon sky..
         Bbm            Gb      Bbm  B    Db
and the  twinkling of a million fire-flies.
         Ebm               B                   Gb
Let your heart keep taking pictures that we'll share as years 
   B
go by.
          Gb     Bbm    B      Db     Gb   D
These are happy, happy, happy, Summer days.

#4.
D     G                    Em              A          D
Look around you, there's a rainbow in that watermelon sky..
         Bm             G       Bm   C    D
and the  twinkling of a million fire-flies.
         Em                C                   G
Let your heart keep taking pictures that we'll share as years 
   C
go by.
          G      Bm     C      D      G    C
These are happy, happy, happy, Summer days.

OUTRO:
C         G      Bm     C      D      G            C
These are happy, happy, happy, Summer days, summer days..
C         G      Bm     C      D      G
These are happy, happy, happy, Summer days..(Fade.)