Intro: C5

Verse 1

        C5              C5
Oh the summer time is coming
        F5                  C5
And the trees are sweetly blooming
        F5              A5
And the wild mountain thyme
      A5               A5
Grows around the blooming heather
       C5
Will ye go, Lassie, go


Chorus
    F5             C5
And we'll all go together
        F5               A5
To pluck wild mountain thyme
    A5                A5
All around the blooming heather
        C5
Will ye go, Lassie, go


Verse 2
       C5               C5
I will build my love a tower
        F5              C5
By yon' pure crystal fountain
     F5           A5
And on it i will build
      A5              A5
All the flowers of the mountain
        C5
Will ye go, Lassie, go


Chorus
    F5             C5
And we'll all go together
        F5               A5
To pluck wild mountain thyme
    A5                A5
All around the blooming heather
        C5
Will ye go, Lassie, go


Here it has an instrumental bit, which uses the same chord pattern as the verse.

Verse 3
      C5               C5
If my true love she were gone
        F5            C5
I would surely find another
        F5              A5
To pluck wild mountain thyme
     A5                A5
Grows around the blooming heather
      C5
Will ye go, Lassie, go


Chorus
    F5             C5
And we'll all go together
        F5               A5
To pluck wild mountain thyme
    A5                A5
All around the blooming heather
        C5
Will ye go, Lassie, go
    F5             C5
And we'll all go together
        F5               A5
To pluck wild mountain thyme
    A5                A5
All around the blooming heather
        C5
Will ye go, Lassie, go

            C5
End: Let us go, Lassie, go


Hope this is helpful :)