I played this song with the guitar on Capo 2 as I found it easy! Throughout most 
of the song, except for when it modulates, the chords go in this order:
A, G, F, E7. Also when you play A, it should be (577555).

When it modulates: B, F#, Ab, F

(Verse 1)

A                        G                       F   
Sikkeuro deutgijocha siro nunmuri mareudorok biro
                          E7
 Kkeutkkaji galge dugobwa non nal jal mot gondeuryosso
 A                  G                   F
 Saranghetdon urinde geunyoppunin nainde
                 E7
We non we non ne yojal gondeuryo no way
A                      G                       F
Tuktuk tolgo nan irona danghanmankeum no dugobwa
                         E7
Sarang gatgo ujong gatgo jangnanchineun no dugobwa
   A                         G                  F               E7
Ni senggangmanhedo bolsso ne momi ttollyowa nol yongsomot-he ijebuto non
Chorus:
         A          F         G          E7                 A
Jonjengiya gopjengiya no dugo bwa bwa no geunyoga tto uljana
          F          G            E7
Gopjengiya ne sarang gondeurin no no no no jonjengiya

(Verse 2, play verse 1)

Geunyoga ttonadon nal non moreunchok modu ijeura malhesso
 Midotdon niga chingguin niga nege irol su isso nol jojuhagesso ije
 Geu doroun ip jebal damulle I pinunmul da dollyojulge
 Ttokttokhi gwie segyo noreul jolde gaman andwo
 
Onjen-ga alge dwelgora senggageun hetgetji
 Nol yongsomot-he ije buto non

         A           F        G          E7                  A
Jonjengiya gopjengiya no dugo bwa bwa no geunyoga tto uljana
         F         G          E7                  A
Gopjengiya no dugo bwa bwa no geunyoga tto uljana
 
(Repeat chorus chords until instrumental)

(Don't you cry cry cry) notteme tto uljana
 (Geunyoga bye bye bye bye bye) modeun-ge kkeuchijana
 (Don't you cry cry cry)
 Ne sarang gondeurin no no no no jonjengiya

(Play B, F#, Ab, F until the end)
Jonjengiya gopjengiya no dugo bwa bwa no geunyoga tto uljana
 Gopjengiya no dugo bwa bwa no geunyoga tto uljana
 (Don't you cry cry cry) notteme tto uljana
 (Geunyoga bye bye bye bye bye) modeun-ge kkeuchijana
 (Don't you cry cry cry)
 Ne sarang gondeurin no no no no jonjengiya