Usher Live At The Summertime Ball 2012 - Pictures See the highlights from Usher's 'OMG' amazing set at the Summertime Ball 2012 at London's Wembley Stadium. 1. Usher opened his Summertime Ball 2012 set with an energetic performance of 'OMG'! 2. Usher owned the stage during his Summertime Ball 2012 set. 3. The Wembley Stadium crowds went wild during Usher's electric set. 4. Usher gave the Summertime Ball crowds his best moves. 5. Usher left his hat on for his performance of 'Climax'. 6. Usher pulled out his best moves during his performance of 'Scream'. 7. Usher works the crowds during his rendition of 'Burn'. 8. Usher pulled out some breakdancing moves, much to the delight of the crowds. 9. Usher dressed all in black for his Summertime Ball 2012 appearance. 10. Usher gave his all during his Summertime Ball 2012 set. 11. Usher pauses between songs to give the crowds a smile. 12. Usher orders the crowds to get their arms in the air. 13. Usher performs live at the Summertime Ball 2012. 14. Usher shows some love for the crowds at Wembley Stadium. 15. Usher finished his set and left the stage to surprise guests Dizzee Rascal and Cheryl Cole. Picture: Louise Roberts