According to Korean media, all SM Entertainment artists will not attend the awards ceremony again. The agency manages
Super Junior, Girls Generation, SHINee, f(x) and BoA.
Last year, SM Entertainment boycotted MAMA, accusing the organizers of unfair selection of nominees, which was flatly denied.
For Rain, he will be unable to attend the ceremony due to the filming of his action series “Fugitive: Plan B.” In addition, he is also preparing for his New Year’s Eve concert.
BEAST, G.Na, and 4Minute have decided not to attend MAMA due to their “busy schedules and individual activities.”
CNBlue will also miss out the ceremony as well as K-pop diva Lee Hyori, Son Dambi, MBLAQ, After School, KARA and Brown Eyed Girls.
Among those confirmed to attend are artists from YG Entertainment and JYP Entertainment including 2PM and 2NE1.
The date of the ceremony earlier became a contentious issue as this would be in conflict with the schedule of music TV programs such as “Inkigayo” and “Music Core.”
Source : http://www.mb.com.ph/articles