Here's the tab she plays on the CD, glad someone else wants to learn this superb song.

G >> Em Bm G7(III) C Cm(III) G G7 >> C
Somewhere over the rainbow way up high
C Cm(III) G >> Em Am7 D7sus D7
G C D7
There's a land that I heard of once in a lullaby
G >> Em Bm G7(III) C Cm(III) G G7 >> C
Somewhere over the rainbow skies are blue
C Cm(III) G >> Em Am7 D7sus
D7 G C D7
And the dreams that you dare to dream really do come true

G C
Someday I'll wish upon a star
D G >> Em C D7sus D7
and wake up where the clouds are far behind me
G F#7
Where troubles melt like lemon drops
Bm D+ Am7 D7
away above the chimney tops, that's where you'll find me

[break, then repeat second section]

G >> Em Bm G7(III) C Cm(III) G G7 >> C
Somewhere over the rainbow skies are blue
C Cm(III) G >> Em Am7 D7sus
D7 G
And the dreams that you dare to dream really do come true
C
If happy little bluebirds fly
D7 C5add9 Ab(IV) G(III)
above the rainbow, why oh why can't I?