Help me figure out a SIMPLE Chord Progression (Zachariah and the Lobos Riders)

This is driving me nuts that I can't figure it out, since it's only like 3 chords..

I only care about knowing the simple chord progression that is played throughout the entire song..most of it is the same chord.

Song: My Favorite Notes in the World (ESPN Rhymes)
Artist: Zachariah and the Lobos Riders

Here is a link to where I uploaded an mp3 of the song I'm talking about.

Thanks in advance.
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