Two very basic chords - however if you play the "normal" E minor and B minor shapes it doesn't sound quite right.
These shapes give you the right voicings and with practice are easy to play.
Note that with the E minor shape you could add in all the open strings as well but for this tune we don't need them and generally it's best to think of these shapes like 3 note barre chords - play them anywhere on the neck ( the root note is where your little finger is )
The R/H technique I'm using is the thumb gets the bass note and 1st and 2nd fingers get the chord
This piece has a 5/4 time signature.
I count - 1 - 2 & 3 - 1 - 2 - [ 3 beats on Em / 2 beats on Bm ]
If you want to play along this is a looped version of the soundfile