SHINee's member Jonghyun and rapper Iron revealed how they felt about performing on "Music Core."

On January 10, Jonghyun appeared on MBC "Music Core" and performed his first solo album's songs "Hallelujah" and "Crazy (Guilty Pleasure)."

For "Crazy (Guilty Pleasure)," Jonghyun did a collaboration with the featuring artist Iron.

After the stage, Iron posted on his Twitter a picture of them winning 1st place on MBC "Music Core" and said, "It's okay, you seemed natural."

At this, Jonghyun commented, "No, you were awkward," arousing laughter.