This is the chord progression of What Is Love by Twice on Piano, Guitar, Ukulele and Keyboard.

[Verse 1]
G
Maeilgat-i yeonghwa sog-eseona
Bm
Chaeg sog-eseona deulama sog-eseo
Em
Salang-eul neukkyeo
Cm
Um salang-eul baewo
G
Nae ilcheoleom jakku gaseum-i ttwieo
Bm                                                                         Em
Dugeundugeungeolyeo seolleim-e bupul-eo olla
Cm
Um gung-geumhaeseo michil geosman gat-a

[Pre-Chorus]
Em                       D/F#
Ooh eonjengan naegedo
G                                             C
Ileon il-i siljelo il-eonalkka
Cm                                                                   D
Geuge eonjejjeum-ilkka? eotteon salam-ilkka?

[Chorus]
G
I wanna know satangcheoleom dalkomhadaneunde
Bm
I wanna know haneul-eul naneun geos gatdaneunde
Em
I wanna know know know know, What is love?
Cm
Salang-i eotteon neukkim-inji
G
I wanna know halu jong-il usgo issdaneunde
Bm
I wanna know sesang-i da aleumdabdaneunde
Em
I wanna know know know know, What is love?
Cm
Eonjengan na-egedo salang-i olkka

[Verse 2]
G
Jigeum ileon sangsangman-eulodo
Bm
Tteoollyeoman bwado
Em
Gaseum-i teojil geos gat-eunde
Cm
Um ileohge joh-eunde
G
Man-il eonjenga jinjjalo naege
Bm                                                      Em
Salang-i ol ttae nan ul-eobeoliljido molla
Cm
Um jeongmal gung-geumhae michil geosman gat-a

[Pre-Chorus]
Em                       D/F#
Ooh eonjengan naegedo
G                                    C
Ileon il-i siljelo il-eonalkka
Cm                                                                   D
Geuge eonjejjeum-ilkka? eotteon salam-ilkka?

[Chorus]
G
I wanna know satangcheoleom dalkomhadaneunde
Bm
I wanna know haneul-eul naneun geos gatdaneunde
Em
I wanna know know know know, What is love?
Cm
Salang-i eotteon neukkim-inji
G
I wanna know halu jong-il usgo issdaneunde
Bm
I wanna know sesang-i da aleumdabdaneunde
Em
I wanna know know know know, What is love?
Cm
Eonjengan na-egedo salang-i olkka

[Verse 3]
G
Jigeum sesang eoneu gos-e salgo issneunji
Bm
Dodaeche eonjejjeum nawa mannage doelneunji
Em
Eonje eotteohge uliui in-yeon-eun
Cm
Sijagdoelneunji moleujiman neukkim-i eojjeonji
G
Ji-Ji-Jinjja joh-eul geos gat-a waenji
Bm
Yeonghwa deulamabodado deo meosjin
Em
Salang-i ol geoya nae yegam eonjena maj-ji
Cm
Eoseo natanabwa naneun da junbiga dwaessji, ready

[Bridge]
Em                                             D/F#
(eodi iss-eulkka) chaj-anael geoya
G C
(eodi iss-eulkka) bogo sip-eo juggess-eo
Cm                                                                   D
Deo isang cham-eul su eobs-eul geosman gat-a

[Chorus 2]
G
Satangcheoleom dalkomhadaneunde
Bm
Haneul-eul naneun geos gatdaneunde
Em
I wanna know know know know, What is love?
Cm
Salang-i eotteon neukkim-inji
G
Halu jong-il usgo issdaneunde
Bm
Sesang-i da aleumdabdaneunde
Em
I wanna know know know know, What is love?
Cm
Eonjengan na-egedo salang-i olkka

[Outro]
G
I wanna know
Bm
I wanna know
Em
I wanna know know know know, What is love?
Cm
I wanna know I wanna know
G
I wanna know
Bm
I wanna know
Em                                                                   Cm
I wanna know know know know, What is love?

For corrections please use the comment box below.