K-pop girl group Apink released new single “Promise U” on Sunday, in commemoration of the group’s fourth debut anniversary.The sextet’s main vocalist Eunji took full charge of the songwriting and composing.

“I made a promise with fans in the early years of Apink’s debut that I’ll write a song for them. It took three years, but it’s finally here. I named the song ‘Pinky Finger' in Korean because it’s the symbol for a promise,” said the 21-year-old.“I’m nervous because this is my first time to write a song. I hope people will like it.”Apink debuted on April 19, 2011, with EP “Seven Seasons of Apink.”

By Lim Jeong-yeo ()