(KCEN) -- A K-pop viral hit tops YouTube's trending videos for 2012.
The number one spot goes to Psy for "Gangnam Style."
In just six months, it became the most viewed YouTube video ever.
Also on the list was Walk Off the Earth's cover of Gotye's "Somebody That I Used to Know," where all five members of the band play the song on one guitar.
And the viral video about Ugandan Rebel Leader Joseph Kony who is accused of using children to work as child soldiers, also made the list.