[All] Do you guys know Baek A-yeon's song "If You're Going to Do This, Then Don't Do This"?

In the mega hit song "If It's Going to Be Like This, Then Don't Do It" by Baek A Yeon, who was previously affiliated with JYP Ent.

Desik Young K featured in the song, and today I suddenly remembered the song, so I searched on YouTube and found a video of him singing the song again last year. Young K sang it so maturely, it felt different.