Idol group ASTRO brought their energy to the December 17 installment of 'Immortal Song'.

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On the Jung Young Rok special, ASTRO covered Lee Eun Ha's "Don't Turn Back" into a powerful, high energy performance with perfectly synchronized choreography. Fellow competitor and idol�Kim Se Jung�complimented the boys on their dance skills, specifically pointing out Rocky.

Spoilers Below:

However, ASTRO weren't able to defeat Take, who brought in 372 points. Also on the episode, Ailee�took the final win.�

How did you like ASTRO's performance?