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

On this week's episode, Sun debuted solo with "Just a Dancer", ATBO debuted with "Monochrome (Color)", CSR debuted with "Pop? Pop!", TO1 returned with "Drummin'", Nicole came back with "YOU.F.O", PURPLE K!SS made a comeback with "Nerdy", MC.MINZY made a comeback with "O EH O", YOUNITE returned with "Aviator", TAN came back with "Walking on the Moon", and Hezz returned with "Churup!".

As for the winners, Seventeen and aespa were the nominees, but it was Seventeen who took the win with "_World". Congratulations to Seventeen!

Performers included JO1, ITZY, STAYC, P1Harmony, BLITZERS, Xdinary Heroes, TRENDZ, and MCND.

Watch the performances below!

WINNER:

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SOLO DEBUT: Sun

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DEBUT: ATBO

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DEBUT: CSR

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COMEBACK: TO1

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COMEBACK: Nicole

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COMEBACK: PURPLE K!SS

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COMEBACK: MC.MINZY

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COMEBACK: YOUNITE

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COMEBACK: TAN

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COMEBACK: Hezz

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JO1

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ITZY

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STAYC

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P1Harmony

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BLITZERS

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Xdinary Heroes

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TRENDZ

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MCND

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