On December 4th, YG Entertainment rocked the Seoul Olympic Park Stadium for the second consecutive night with their 'YG Family Concert'. On top of performances of their released tracks, Big Bang and 2NE1 delighted fans with special never-before-seen stages. In particular, the five-man quintet surprised everyone in the stadium with a cover of hit track "I Am The Best", transforming 2NE1's track into a masculine performance with just as much "oomph" as the original. T.O.P., G-Dragon, Seungri, and Daesung took the parts of Park Bom, CL, Sandara Park, and Minzy respectively, and were aided by the girls' backdancers. Check out Big Bang's cover below: Do you think they did the original version justice? Tell us what you think in the comments section below!