triades

Hi!
I don't know this song, but i can explain you how to play a triade, with a few exemples.
A triade is actually an easy chord, composed by 3 or 4 notes.

For exemple, the F chord, played as a triade : F A C (F), or tabbed :
(1)
1
2
3
(0)
X

A Fm :
(1)
1
1
3
(0)
X

If you move this position all along the neck, you can play the F-F#.....

Another way to play triade is to use the "thin" strings (excuse my poor english, please ).
A Bb, is :
1
3
3
X
X
X

And a Bb :
1
2
3
X
X
X

And you can also move this position all along the neck of your guitar. This chords are used in the chorus of "Stairway to heaven"

I wish i helped you

Max.