Okay, so I barely play guitar but I love Ed's cover of this, so I decided to tab 
it - First tab btw, so be kind. Looks and sounds pretty accurate imo :) xo

G:      320003
Cadd9:  x32030
D:      xx0232
Em:     x22000
Am      xx2210

           G  Cadd9   G
Oh the summer time is coming

        Cadd9             G
And the trees are sweetly blooming

         Cadd9   D       Em
Where the wild mountain thyme
     
       Am        G        Cadd9
Grows around the blooming heather

           G  Cadd9  G
Would you go lassie go?

         Cadd9   G
And we'll all go together

         Cadd9   D       Em
Where the wild mountain thyme
     
       Am        G        Cadd9
Grows around the blooming heather

           G  Cadd9  G
Would you go lassie go?



Cadd9    D    G



       G        Cadd9  G
I will build my love a bower 

       Cadd9        G
On yon pure crystal fountain

    Cadd9     D      Em
And around it I will place

        Am      G      Cadd9
All the colours of the mountain

           G  Cadd9  G
Would you go lassie go?

         Cadd9   G
And we'll all go together

         Cadd9   D       Em
Where the wild mountain thyme
     
       Am        G        Cadd9
Grows around the blooming heather

           G  Cadd9  G
Would you go lassie go?



Cadd9    D    G



      G    Cadd9     G
If my true love were gone

          Cadd9       G 
Then I'll surely find another

   Cadd9   D      Em
And to her I will sing/say

            Am       G      Cadd9
Things that make her know I want her

           G  Cadd9  G
Would you go lassie go?

         Cadd9   G
And we'll all go together

         Cadd9   D       Em
Where the wild mountain thyme
     
       Am        G        Cadd9
Grows around the blooming heather

           G  Cadd9  G
Would you go lassie go?