All power chords, all played like barre chords except where indicated.  There's a 
serious lack of Bishop Allen up here, I thought I'd make my contribution.

                  A
Am I dimmer every day?
                   Ab
Am I just a little glimmer
                    A
like a tiny bobbing head
            D
of an ocean swimmer?
F         A
Olly olly oxen free
Ab             A
Can you see me?

A D E(open) A A D E(7th fret)

Do I slowly get erased
as I slowly eat my dinner?
Though my stomach might agree
I'm hardly getting thinner
Olly olly oxen free
Can you see me?

                   A
I would choose the darkest horse
D                    A
That's the horse I'd ride
    E                A
The stables would be shadowy
         D              E
and we'd start the race behind

       F#
They'd take their feet
    D
and toss their hats
    A           E
and yell out in surprise
F#                D
You wouldn't need binoculars
E
You'd see it with your own two eyes

Am I dimmer every day?
Am I shrinking, am I shrinking?
Can you recognize my thoughts?
Do you care what I am thinking?
Olly olly oxen free
Can you see me?

You see me now
but it takes a lot of squinting
and there isn't any shade
and the sun is unrelenting
Olly olly oxen free
Can you see me?

I would choose the darkest horse
That's the horse I'd ride
The stables would be shadowy
and we'd start the race behind

They'd take their feet
and toss their hats
and yell out in surprise
You wouldn't need binoculars
You'd see it with your own two eyes