Recently, jtbc Sugar Man 3 mentioned Yoon Sa-ra along with a travel sketch.
Yoon Sa-ra participated as a lyricist in 'Deep', which was recorded as the second track of Lee Hyori's 2nd album 'Dark Angel'. He also wrote the group EXO's special album Universe in winter 2017.
About EXO
Exo is a South Korean-Chinese boy band based in Seoul that was formed by SM Entertainment in 2011 and debuted in 2012. The group consists of nine members: Xiumin, Suho, Lay, Baekhyun, Chen, Chanyeol, D.O., Kai and Sehun.
 Wikipedia