 Usher akaita Numb kekutanga mune medley ne Euphoria panguva yake American Express Unstaged inoratidza musi waJune 11, 2012 paLondons HMV Hammersmith Apollo. Mutambo wacho wakatungamirirwa nomutungamiriri weBritain Hamish Hamilton. Muimbi akaimba rwiyo pa2012 American Music Awardsmumedley neClimax uye Cant Stop Wont Stop. 