Mnet's 'M! Countdown' switched things up this week with a special in Taiwan.

The 'M! Countdown - Nihao Taiwan' special was chock-full of exciting performances from your favorite idols, including the debut of U-KISS' first subunit uBEAT.

Competing for the #1 spot, it was a hot battle between Psy and Seo In Guk, but in the end, it was Psy who clinched the win tonight with "Gentleman"!

Congratulations to Psy on his 'M! Countdown' trophy!



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[Backstage Clips]





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Performers tonight included SHINee, INFINITE, T-ara, SISTAR, Davichi, K.will, TEEN TOP, Girl's Day, Dal Shabet, Ailee, Tasty, Hong Dae Kwang, and BaeChigi.

Check out the performances below:

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< TEEN TOP >







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< Girl's Day >



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< Hong Dae Kwang >



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< Dal Shabet >





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< Tasty >





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< Davichi >



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< Baechigi >



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< SISTAR/SISTAR19 >





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< K. Will >



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< INFINITE >





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< SHINee >





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< Ailee >



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< TEEN TOP/CLON >



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< T-ara/Dream Girls >



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< Ending >



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