Complete

The song start with the key of D#
Somewhere in the middle of the song after the 1st chorus
The song changes to the key of E when Seohyun start singing
You have to adjust the capo from 1st fret to 2nd fret when the key changes
Use the chord according to the capo position

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Basic chord
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Verse: D G A
Pre-Chorus: G A F#m Bm G A
Chorus: D Bm G F#m Bm G A
Bridge: Csus2 Dsus2 Csus2 Dsus2 Bm F#m Em A

Base on your hearing,
you can slightly change the chord for it sounds better

D to Dsus2
A to Asus2
G to (Gadd6, Gmaj7, Gadd5)
Bm to Bm7
F#m to F#m7

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Key for D#
(Capo 1st fret)
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-Verse-
[Jessica] Noonbooshin gyejol gadeukhi hyangiro oon goril jina
[Yuri] Jokshim seuron nae bal goreun doogeun goryo
[TaeYeon] Jokshi mari nal hyanghae eutneun geudae moseub gaga wojimyun
[Sunny]Sesang modeun haengboki da nae got gata

-Pre-Chorus-
[Tifanny]Neujeun ohu haesaleh moon deuk jameso gae
[SooYoung] geudae moreuge usojyo

-Chorus-
[All]Ajikdo mon mi raeye irige jiman geudae goomi anigi
Just one love oori doori goro ganeun giri
[Jessica] gagireul baraeyo

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Change to key of E
(Shift Capo to 2nd fret)
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-Verse-
[SeoHyun]Good morning mae il achimen
([Jessica] Always in my heart) nalgae ooneun geudaeye jonhwa
[Yoona]Machi oori hamke matneun achim gata

-Pre-Chorus-
[TaeYeon]Yonghwa chorom gon nejun yebeun satang boda
[Hyoyeon] do ook dalgom han geudae jyo

-Chorus-
[All]Anheun shiganeul dara byonhagetgi man doo son noji an gireul
Just for love yongwontorok majimakil sarang
[Tifanny] geudaegil baraeyo

-Bridge-
[Sunny]Numoona sojong hangolryo
[Seohyun] geudaeye sarangee
[Jessica]Oh it’s true ojik saroman bomyo geudae gyute itgo shipo

-Chrous-
[All]Man heun shigan soge byon han getjiman dooson noji an gireul
Just for love yongwon torok ajimanil sarang
[Taeyeon] geudae gil barae yo
[Jessica]To make my life complete
[Tifanny]You make my life complete