B.I.G (Boys In Groove) attempted to dance to their latest single "1.2.3" at 2x the speed during their appearance on TBS's 'Fact in Star'!

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"1.2.3" is a brighter, more toned down song than B.I.G's previous title songs, but still, dancing to the energetic, fun choreography at 2x the normal speed isn't easy! 

Watch and find out if the boys managed to do it successfully, above!

Tip: Hana