In fact it's more kind of a bass tab. Sounds like this:
e || -----------------------------------------------------||
B || -----------------------------------------------------||
G || ----8---10--12---------------------------------------||
D || -----------------12---10-----------------------------||
A || ----6---8---10---------------------------------------||
E || -----------------10---8------------------------------||
The chords are:
Eb Fm Gm Dm Cm but it doesn't sound this way. It's just completing the bass notes.
If you want to play a solo, play it in Eb major or C minor.
[ Tab from: https://www.guitartabs.cc/tabs/s/sigur_ros/samskeyti_tab_ver_2.html ]
Tablature:
e || -----------------------------------------------------------||
B || -----------------------------------------------------------||
G || -----------------------------------------------------------||
D || --12-13-12------12-13-12------12-13-12------12-13-12--15---||
A || ----------13--13--------13--13--------13--13--------13--13-||
E || ------------15------------15------------13-----------------||
The bass notes (G and F) change sometimes, even with an Ab-note, which is normally not
in the Eb major or C minor scale. At a certain moment, everything is played an octave higher.
Greets
