Paul McCartney is preparing for his performance at the London Olympics’ opening ceremony this Friday, and the ex-Beatles star has posted a video of him and his backing band rehearsing for the big event.  In the clip, Sir Paul and his group also poke fun at the incident that happened at Bruce Springsteen‘s July 14 concert in London’s Hyde Park, which featured a surprise appearance by McCartney, where organizers cut the power during show because it had run past the event’s curfew.

During the video, the rock legend addresses the camera and says, “Hey, welcome!  Here we are in London.  We’re rehearsing for the Olympics…We’re all getting very excited.  We’re ready to rock.  Best wishes to you, wherever you are in the world!”

Macca and his group then kick in to the Beatles classic “I Saw Her Standing There,” which also was one of two songs he performed with The Boss in Hyde Park.  Shortly into the performance, however, the sound cuts off and McCartney and his band mates look around incredulously.  He then asks, “Who pulled the plug?” as the clip comes to an end.

The London Olympics’ opening ceremony will be broadcast by NBC on Friday starting at 7:30 p.m. ET/PT.

Copyright 2012 ABC News Radio