On December 22nd, cable channel jTBC aired a new episode of 'Music On Top', hosted by B2ST's leader Yoon Doojoon and actor Lee Hyun Woo. This week's show was a Christmas special, and as such, a few artists delivered covers of popular Christmas songs. Check out videos from the Wonder Girls, G.NA, Chocolat, SISTAR, and RaNia below! == < Wonder Girls > - < G.NA > - < Chocolat > - < SISTAR > - < RaNia > ===