KARA's Seungyeon updated her Twitter on 15th December before the airing of MBC Music Core.

She said,"MBC Music Core in a while! The only one Han Seungyeon's Guilty, woah nervous! Tomorrow Kang Ji Young Wanna Do and Park Gyuri's White Day Dream on Inkigayo week."

Fans commented,"Anticipate rocker's transformation","solo stage all the best","will watch Music Core for sure" and etc.

KARA's Seungyeon performed solo song Guilty on Music Core aired on 15th December.