Key of Fminor. Capo on 1st fret! I wrote the breakdown of the chords by themselves 
but if you want to see them with the lyrics, scroll down farther. Also read what I 
said about the Am chord at the very bottom after the song.


Capo on 1st fret

Intro: C Em Am C
Verse: C Em Am C (x2)

Chorus: 
Em, C D
Em, G D
Em, C D
Am, C D
(x2)

Verse: C Em Am C (x2)

Chorus: 
Em, C D
Em, G D
Em, C D
Am, C D
(x2)

Rap verse: Em

Bridge:
Em C D
Em G D
Em C D
Am-*pause*

Final Chorus:
Em C D
Em G D
Em C D
Am C D
(2x)


Chords with lyrics:

C                   Em     Am             C
[D.O] She's my black pearl, She's my black pearl
C                    Em
Jidoneun pilyo eobseo nae mami neol garikyeo
Am                   C
Gal giri heomnanhaedo ijjeumeseo geureohgen mothanda
C                            Em
[Suho] Han shido tteoreojyeo ijeobon jeoki eobtneunde
Am                                        C
[Baekhyun] Jeo meolri supyeongseon kkeute neoye moseubeul bol su ittdamyeon

      Em  C              D       Em G          D      Em C D
[All] Nan docheul olryeo kkeutkkaji barame nal shidgo oh oh oh~
Am                    C         D
Gichireojin sumyeonye yodongeul jaewo
Em                  C              D
Eodum soge pin kkot bada wie tteun dal
Em                      G               D
Bimil gateun geu got my beautiful black pearl
Em                  C              D
Eodum soge pin kkot bada wie tteun dal
Am                      C               D
Bimil gateun geu got my beautiful black pearl

C
[Baekhyun] Shiljaehagin haneun geonji hyeonshilgwaneun dongtteoreojin
Em
([Suho] Kkumgwa isang sogeul hemaego ittna)
Am                                              C
Shinhwa soge sal geotman gateun oh naye yeoshina shiganeul hechigo neol chajaga
C                                Em
[Suho] Yeongwonhan geotdeureun mideobon jeoki eobtneunde
Am                            C
[D.O] Geutorok ganjeolhage na barawottdeon neol dahge dwindamyeon

      Em  C              D       Em G          D      Em C D 
[All] Nan docheul olryeo kkeutkkaji barame nal shidgo oh oh oh ~
Am                    C         D
Gichireojin sumyeonye yodongeul jaewo
Em                  C              D
Eodum soge pin kkot bada wie tteun dal
Em                      G               D
Bimil gateun geu got my beautiful black pearl
Em                  C              D
Eodum soge pin kkot bada wie tteun dal
Am                      C               D
Bimil gateun geu got my beautiful black pearl

Em
[Kai] Pokpungi morachineun ajjilhan sunganedo
Baetmeoril dolrijima hanghaereul meomchujima
[Changyeol] I jeongdoe geobeul meokgo molleonal jul arattdamyeon shijakjwo haji anhattda
Noreul gamchwonoheun badaye jangnanen gikkeoi naega matseojunda

      Em                     C         D      Em
[All] Geochireojin sumyeonye yodongeul jaewo, Geochireojin sumyeonye
G         D      Em                     C         D      Am
yodongeul jaewo, Geochireojin sumyeonye yodongeul jaewo  jaewo j-j-jaewo--
[D.O] She's my black pearl oh~

      Em  C             D       Em G            D       Em C D
[All] Nan haneure tteun taeyanggwa daseot gaeye daeyang oh oh oh~
Am                    C           D
Chanranhage bitnaneun geunyeoreul hyanghae
Em                C             D
Jiteun angae soge nopeun pado wie
Em                   G               D
Heurithage bichin my beautiful black pearl
Em                  C                  D
Gipeun chimmuk soge seulpeun seonyul wie
Am                   C               D
Hyemihage deulrin my beautiful black pearl
     [(D.O) She's my beautiful beautiful black pearl~]


So, there is a brief quarter-note in the instrumental bass line of the song within 
the Am-shaped chord ONLY in the choruses and bridge. You probably know what I'm 
referring to if you've listened to the song closely. You can incorporate that note 
by releasing the lowest finger from the Am-shaped chord and placing it like this 
for a brief moment:

e|---|---
B|---|---
G|---|-o-
D|---|-o-
A|---|-o-