x = handclap
Dm7 = XX0211
Gaug = 321003


N.C.                        x   x
(With a hey and a hee and a hoo-hoo)
                            x   x
(With a hee and a hoo and a hah-hah)
                            x   x
(With a hoo and a hah and a hee-hee)
Gaug
(Ooooohhhhhhhhh.......)

Base notes leading into C chord: G-G-A-B-

C
I'm the happiest Christmas tree
F       D7      C
Hoo-hoo-hoo,    hee-hee-hee
G                C          A7
Someone came and they found me
    G7          G     C
And took me home with them

Gaug C                C7
Oh,  I'm the happiest Christmas tree
F       D7   C     
Hoo-hoo-hoo, hee-hee-hee
G                  C           A7
Look how pretty they dressed me
    G7     G     C
Oh, lucky, lucky me

      F                C/G    C
I got shiny bells that jingle
    F                C/G   C
And tiny lights that tingle
    F            C/G      A7
Whenever anyone passes by
  D7                    G       G7
I blink my lights and I wink my eye

    G                C7
Oh, I'm the happiest Christmas tree
F         D7   C
Christmas Day, wait and see
G                C      A7
I'll be laughing happily
       Dm7     G7      C    
With a hoo-hoo-hoo-hee-hee

N.C.                        x   x
(With a hey and a hee and a hoo-hoo)
                            x   x
(With a hee and a hoo and a hah-hah)
                            x   x
(With a hoo and a hah and a hey-hey)

C
I'm the happiest Christmas tree
F        D7     C
Hoo-hoo-hoo,    hee-hee-hee
G                C          A7
Someone came and they found me
    G7          G     C
And took me home with them

Gaug C                C7
Oh,  I'm the happiest Christmas tree
F       D7   C     
Hoo-hoo-hoo, hee-hee-hee
G                  C           A7
Look how pretty they dressed me
    G7     G     C
Oh, lucky, lucky me

      F                C/G    C
I got shiny bells that jingle
    F                C/G   C
And tiny lights that tingle
    F            C/G      A7
Whenever anyone passes by
  D7                    G       G7
I blink my lights and I wink my eye

    G                C7
Oh, I'm the happiest Christmas tree
F              C
Christmas Day, wait and see
G                C      A7
I'll be laughing happily
       Dm7     G7      C    
With a hoo-hoo-hoo-hee-hee

来源：www.ultimate-guitar.com