"Happiness", written by Yoo Young-jin and composed by Will Simms and Chad Hugo, was released on August 4, 2014 through South Korea's music portals.
HAPPINESS
[Seulgi] Sometimes you gotta be bold
Just rock the world
Boo-yah!
[All] Lalala lalala lalalala (happiness!)
Lalala lalala lalalala
[Irene] Are you happy? uh!
[Seulgi] Gomineun go up
Kkulkkulhan gibun change up
Himeul naeryeogo ije wind up
Han bange meotjin iri gadeuk straight up
[Irene] Nan maeil deo Style up
Gimun up doeneun ire jipjung
[Wendy] Naega haengbokhage saneun bigyeoreul jom malhae bolkka
[Joy] Achine nan jameul kkae
Eommakke saranghandago malhae
([Irene] Eohyuchakhan nae ttara)
[Wendy] Joljol nareul ttaraon happyga
Neomu gwiyeowoseo haengbokhae
([Irene] Uh yaega malhandae)
[Seulgi] Ireon money jeoreon power
Geugeotman ttaragada
[Irene] Eoreundeuri jjanhae boyeo
Geudeureun jeongmal haengbokhaji anha
[Joy] Gippeun iri meotjin iri
Segyeneun cham manheun dera
[Wendy] Geureon money Geureon power
Urineun gwansimdo kkeunheobeorin ji orae
[Irene] Dalla dalla naneun jom haebogo sipeun
Geunyang hago malji
Gomin gomin hadaga
Eoreuni doemyeon huhoe manheul tende
[Joy] Eoje oneul naeildo
Haengbogeul chatneun naui moheom ilgi
Dalla dalla naneun jom
Geungjeongui himeul naneun mitgo itji
[All] Lalala lalala lalalala (happiness)
Lalala lalala lalalala (nan wonhae)
Lalala lalala lalalala (kkumkkuja)
Lalala lalala lalalala
[Irene] Are you happy? uh!
[Joy] Hakgyo ganeun gire mannan chingu naege dallyeowaseo
Paljjang kkigo useojuni Joko
[Irene] Kkirikkiri moyeo jangnanchideon napjaaedeul
Naega jinagani uisikhaeseo Joko
[Wendy] Jansori hajiman
Sesangeseo naega jeil jotan eomma
Hey hey tv soge ssaumbakke moreuneun eoreundeul ppae
[Seulgi] Jeomjeom deo joheun gyeol
Nan naraseo haengbokhae
Deo gibun joheun geon
Nae gyeote neo itdan geo
