K-Pop idol groups have come together to sing a Christmas song on KBS "Music Bank."

Today on KBS "Music Bank," top idol groups of this year each performed their hit songs on stage.

For the finale of this special episode, all the groups came on stage together to sing a Christmas song.

Top idol stars such as TVXQ and KARA and more were seen on stage.

The groups also showed special performances such as girl groups Christmas song medley's and boy idol group's version of girl group songs.