[MV] Ryu Sujeong - Bad Bye

[MV] Ryu Sujeong - NEW CAR

[MV] Ryu Sujeong (feat. XYLØ) - SHXT

[MV] Ryu Sujeong (feat. XYLØ) - Fallen Angel

[MV] Ryu Sujeong - Grabby Girl

[MV] Ryu Sujeong - Love or Hate

[MV] Ryu Sujeong - PINK MOON

[OST] Sujeong - Color Rush

From the Color Rush OST.

[MV] RYU SUJEONG (Lovelyz) - Tiger Eyes

[OST] Girls Next Door - Deep Blue Eyes

Idol Drama Operation Team OST.
I don't know the plot exactly, but it's something like these seven idols are creating a drama and their characters, telling the story of seven struggling trainees/idols. This is a song their characters perform in the drama. Jinyoung (B1A4) produced the song.

Somi (IOI), Moonbyul (MAMAMOO), Seulgi (Red Velvet), YooA (Oh My Girl), Sujeong (Lovelyz), D.ana (Sonamoo), Kim Sohee (IBI).