At this year's MAMA (Mnet Asian Music Awards), which premiered on December 3, Girls' Generation member Tiffany and EXO member Chen performed with American singer, songwriter, and Grammy award winner John Legend!

The two SM artists accompanied John Legend during the performance of his hit song "Green Light." The segment began with Tiffany giving background information and hinting at who the special surprise guest was. Tiffany then introduced Chen to the audience, who actually started the song off before John Legend made his entrance onto the stage. Following their performance, Tiffany presented John Legend with the award for the 2014 Mnet Favorite International Artist.

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After thanking the audience, John Legend gave an amazing performance of his hit single "All of Me." You can watch the whole segment below, and I bet you'll see a few audience members you recognize!

What do you think of John Legends "All of Me" performance?

KrisE! @K_Kisses_KrisE