This song comes in in the with a chord that fits 
with the chords in 'untitled 2'.

The organ plays:

| G# | Bb | before it starts to play the 'untitled 3' 
chords sequence.

| Eb | gm | cm | G# | Bb |

This is how the piano melody is played on the guitar. 
The pattern changes throughout the whole song.

|e:--10-11-10----------10-11-10----------10-11-10----13----|
|B:-----------11----11----------11----11----------11----11-|
|G:--------------12----------------10----------------------|
           Eb                      gm       

|e--10-11-10---------10-11-10----------10-11-10-----------|
|B-----------11----11---------11----11----------11----11--|
|G--------------10---------------12----------------10-----|
    cm                     G#                      Bb

|e:--10-11-10----13------10-11-10----------10-11-10----------|
|B:-----------11----11------------11----11----------11----11-|
|G:----------------------------------12----------------10----|
                         Eb                      gm

|e:--10-11-10----13------10-11-10----------10-11-10----------|
|B:-----------11----11------------11----11----------11----11-|
|G:----------------------------------10----------------12----|
                 cm                        G#

|e:--10-11-10----------10-11-10----------10-11-10----------|
|B:-----------11----11----------11----11----------11----11-|
|G:--------------10----------------12----------------12----|
           Bb                      Eb       

|e--10-11-10---------10-11-10----------10-11-10-----------|
|B-----------11----11---------11----11----------11----11--|
|G--------------10---------------12----------------10-----|
    gm                     cm                      G#

|e--10-11-10---------10-11-10-----------:|
|B-----------11----11---------11----11--:|
|G--------------12---------------10-----:|
                     Bb                         


Jónsi plays this on his guitar:

|B:-11--16--18-16-15--:|
    Eb  gm  cm G# Bb