Member Amber was not present for f(x)’s performance on MBC Music Core.
f(x) performed their followup hit from their 1st minialbum ‘Mr. Boogie’ on 17th July on MBC Music Core, after the promotions for their title song ‘NU ABO’ ended. However for the performance that day, only 4 f(x) members were present for the performance. It is revealed that Amber had injured her ankle and will not be able to carry out the choreography. With that, the girls will be putting up special stages as 4 members both on 17th and 18th July on the weekend music shows.
A SM Ent official said, “This is a small surprise event for fans. The girls will continue to greet fans through their individual activities.”