I had a go at transcribing this from the Woodstock album. It's not perfect but
it'll get you near it. 


Cmaj7
I had a dream last night 
              Cadd9 (x32030@1)  Cmaj7What (x32000@1)a lovely dream it was 
Cmaj7
I dreamed we all were alright 
         Cadd9 (x32030@1)   Cmaj7Happy (x32000@1)in a land of Oz 


AmWhy (x02210@1)did everybody laugh 
F (133211@1)                 GWhen (320003@1)I told them my dream?
AmI (x02210@1)guess they all were so far 
F (133211@1)               GFrom (320003@1)that kind of scene 
Feeling mean 


I heard a song last night 
What a lovely song it was 
I thought I?d hum it all night 
Unforgettable because 


F (133211@1)                             GAll (320003@1)of the players were playing together 
F (133211@1)                                    GAnd (320003@1)all of the heavies were light as a feather 
Em (022000@1)                         DmAll (xx0231@1)I'll remember is a feeling tomorrow 
F (133211@1)                                GAnd (320003@1)as I recall the rest will just follow 


I had a dream last night 
What a lovely dream it was 
I dreamed we all were alright 
Happy in a land of Oz 
Happy in a land of Oz