Aqualung (Acoustic Part) - Chords - Tutorial

I forgot to mention in the video that Jethro Tull does this with capo on 3rd fret.

4 chords: Em, D, A, Am
Progression: Em, D, A, Am, Em, D (repeat)

Lyrics (acoustic part):

Sun streaking cold --
an old man wandering lonely.
Taking time
the only way he knows.
Leg hurting bad,
as he bends to pick a dog-end --
he goes down to the bog
and warms his feet.

Feeling alone --
the army's up the road
salvation a la mode and
a cup of tea.
Aqualung my friend --
don't you start away uneasy
you poor old sod, you see, it's only me.
Do you still remember
The December's foggy freeze --
when the ice that
clings on to your beard was
screaming agony.
And you snatch your rattling last breaths
with deep-sea-diver sounds,
and the flowers bloom like
madness in the spring.