LOOΠΔ - Pre-debut 2016-2018

2016
Released: October 5, 2016
ViViD Heejin

Released: November 17, 2016
Around You (다녀가요) Hyunjin
I'll Be There Heejin, Hyunjin

Released: December 15, 2016
Let Me In (소년, 소녀) Haseul
The Carol Heejin, Hyunjin, Haseul

2017
Released: January 16, 2017
Kiss Later (키스는 다음에) Yeojin
My Sunday Heejin, Hyunjin
My Melody Haseul, Yeojin

Released: April 17, 2017
Vivi - Everyday I Love You (feat. Haseul)
Vivi - Everyday I Need You (feat. Jinsoul)

Released: May 23, 2017
Kim Lip - Eclipse
Kim Lip - Twilight

Released: June 26, 2017
JinSoul - Singing in the Rain
Love Letter (JinSoul and Kim Lip duet)

Released: July 28, 2017
Choerry - Love Cherry Motion
Puzzle (Choerry & Jinsoul)

Released: November 28, 2017
Yves - new
Yves - D-1

Released: December 28, 2017
Chuu-Heart Attack
Chuu & Yves-Girl's Talk

Released: January 30, 2018
Go Won-One & Only
Gowon & Chuu Ft. Kim Lip-See Saw

Released: March 30, 2018
Olivia Hye ft. Jinsoul-Egoist
Go Won and Olivia Hye featuring HeeJin-Rosy