Digital Single - 3.5th Period (Original Television Soundtrack) Pt. 3 [6 January]
Tracklist:
1. First Love (Performed by Zoa & Bumkey)
2. First Love (Inst.)
1. First Love (Performed by Zoa & Bumkey)
2. First Love (Inst.)
Digital Single - Lee Hong Gi's playlist <ONCE> (7 January)
Tracklist
2. call (Performed by Soojin, Monday, Soeun, Jaehee & Jihan)
2. call (Performed by Soojin, Monday, Soeun, Jaehee & Jihan)
Digital Single - Watcha Original <DOUBLE TROUBLE> EPISODE 2.Crown 'Sonata of temptation' (14 January)
Tracklist
1. Sonata of temptation (Performed by Monday & Lim Seul Ong)
2. Sonata of temptation - Instrumental
1. Sonata of temptation (Performed by Monday & Lim Seul Ong)
2. Sonata of temptation - Instrumental
Digital Single - Watcha Original <DOUBLE TROUBLE> EPISODE.3 Fantasy 'Love me or Leave me' (28 January)
Tracklist
1. Love me or Leave me (Performed by Monday & Jang Hyun Seung)
2. Love me or Leave me - Instrumental
1. Love me or Leave me (Performed by Monday & Jang Hyun Seung)
2. Love me or Leave me - Instrumental
Digital Single - Watcha Original <DOUBLE TROUBLE> EPISODE.4 LEGEND DUET - 'Trouble Maker' (18 February)
Tracklist
1. Trouble Maker (Performed by Monday & Kim Dong Han)
2. Trouble Maker - Instrumental
1. Trouble Maker (Performed by Monday & Kim Dong Han)
2. Trouble Maker - Instrumental
Digital Single - Watcha Original <DOUBLE TROUBLE> EPISODE.5 History - 'Again & Again' (4 March)
Tracklist
1. Again & Again (Performed by Monday & Lim Seul Ong)
2. Again & Again - Instrumental
1. Again & Again (Performed by Monday & Lim Seul Ong)
2. Again & Again - Instrumental
1st Single Album - Play Game : Awake (7 March)
Released in 3 versions - Myself, Real Self & Platform Album
Released in 3 versions - Myself, Real Self & Platform Album
Myself Version
Real Self Version
Platform Album Version
Tracklist
1. Ven para
2. Solar
3. Where Is My Love?
1. Ven para
2. Solar
3. Where Is My Love?
Digital Single - Fall in love (A Business Proposal OST Part. 6) [20 March]
Tracklist
1. Fall in love (Performed by Soeun & Jihan)
2. Fall in love (Inst.)
1. Fall in love (Performed by Soeun & Jihan)
2. Fall in love (Inst.)
Digital EP - Immortal Songs - Children's Day 100th Anniversary (4 June)
Tracklist
3. What's Your Name? (Performed by Weeekly & Moon Chaewon )
3. What's Your Name? (Performed by Weeekly & Moon Chaewon )
Digital Single - Love (Weeekly X Kim Eana Project) [21 July]
Tracklist
1. Love (Weeekly X Kim Eana Project)
2. Love (Weeekly X Kim Eana Project) (Inst.)
1. Love (Weeekly X Kim Eana Project)
2. Love (Weeekly X Kim Eana Project) (Inst.)
Digital Compilation - Listen Up EP.1 [30 July]
Tracklist
3. Airplane Mode (Prod. Lee Daehwi)
7. Airplane Mode (Prod. Lee Daehwi) (Inst.)
3. Airplane Mode (Prod. Lee Daehwi)
7. Airplane Mode (Prod. Lee Daehwi) (Inst.)
Digital Single - I Promise (GIRL'S RE:VERSE) [26 November]
Tracklist
1. I Promise (Performed by GIRL'S REVERSE contestants including Monday & Jaehee)
2. I Promise (Inst.)
1. I Promise (Performed by GIRL'S REVERSE contestants including Monday & Jaehee)
2. I Promise (Inst.)
Digital Single - YAOKI Project part. 1 [9 December]
Tracklist
1. Happy Christmas
2. Happy Christmas (Inst.)
1. Happy Christmas
2. Happy Christmas (Inst.)