Former 9Muses member Ryu Sera covers ''Psycho'' by Red Velvet in a traditional way.

Ryu Sera, formerly of 9Muses, covered ''Psycho'' by 9Muses. 

Sera took the time to post a cover of Psycho by Red Velvet. In the video Sera is seen wearing a hanbok while she sings over the instrumental which mainly is a gayageum (a traditional Korean string instrument). She also includes elements of pansori in her singing, resulting in an amazing, sweet cover.