Not directly related to Lovelyz, but Minjoo will debut solo soon, and she also did a great duo with Jin Joo of WSG Wannabe.
Ju Ju Secret - Lonely Night
Both are currently in the casting of Hangout with Yoo (Jae Seok), and the variety show produced and promoted the song.
They even went to Show Music Core and other places.
There is actually a poll to decide the next step (go or stop) of their promotion by public vote, but I don't know the results yet.