On March 3rd, Brian released his latest single titled In My Head which was a cover of Jason Derulo's American track. A week later, he released his MV of his song and revealed that he would have a duet performance with Jason Derulo on the 17th and 18th at a special showcase at Club Heaven in Seoul. But that wasn't all -�more details of their duet have revealed that the two will also perform on March 18th's episode of Mnet's M! Countdown and also on Music Bank the day after. Today on M! Countdown, Brian and Jason Derulo finally performed In My Head, and it was an awesome performance. Check it out below! http://www.youtube.com/watch?v=gmjl-8cop6A Stay tuned to tomorrow's Music Bank to catch the two performing together again!