This is the 4th performance for the month, the other 3 being their own livestreamed show on the 12th, MUSIC SUPER STATION LIVE 2020 on the 25th, and Kōhaku on the 31st. Like Kōhaku, this is BABYMETAL’s first appearance on the program.
As reported by Natalie, BABYMETAL will perform “PA PA YA!!”.
It will be broadcast on Monday, December 21st between 7 PM and 10:57 PM (Japan time) on TBS (Japan).
Other performers include BTS, LiSA, MR. Children, among others. Full list on their website.