The list of performers for SM Entertainment's label concert 'SM Town Live World Tour IV in Tokyo' had to be modified because four idols are unable to attend.

Girls' Generation's Jessica and Sooyoung, EXO's Luhan, and f(x) member Sulli will not participare in the upcoming Tokyo performance of the SM Town concert tour.

Sulli temporarily stopped all her music activities with f(x) earlier this summer and will not be returning to perform alongside her label-mates.

Girls' Generation member Sooyoung is currently starring in the MBC drama, 'My Spring Days' and cannot attend because of her busy filming schedule. After the recent expulsion of Jessica from Girls' Generation, Jessica is also not planning to attend the label-sponsored concert.

EXO's Luhan is still recovering from illness and will refrain from performing until he is back to a healthy state.

The absence of the four idols has been confirmed by a representative of SM Entertainment. The rep spoke to Korean news media TV Report and said, "Sooyoung, Jessica, Luhan, and Sulli will not be able to be with us at the SM Town concert in Japan."

While Japanese fans are undoubtedly disappointed, there is some good news. SHINee member Onew, has fully recovered from his throat surgery in June and will join his group mates on stage for the Tokyo performance of the SM Town concert.

'SM Town Live World Tour in Tokyo' is scheduled for this weekend at the Ajinomoto Stadium.