Mnet's�'M!�Countdown'�is back for its weekly show featuring performances by your favorite artists!�

On this episode, LOONA made their official debut with "Hi High", Nature�debuted with "Allegro Cantabile", and 'Produce 48' held special performances.

As for the winners, Red Velvet and (G)I-DLE were the nominees, but it was Red Velvet who took the win with "Power Up"! Congrats to Red Velvet!

Other performers of the night were Aivan, Berry Good, IN2IT, Nature, BIGFLO, MXM, Stray Kids, IMFACT, Jung Se Woon, DIA, Norazo, and (G)I-DLE.

Check out the performances below!

SEE ALSO: iKON win #1 + Performances from August 9th 'M! Countdown'!