VIDEO: Watch Michael Jackson's Final Rehearsal

updated 07/03/2009 AT 11:20 AM EDT

originally published 07/03/2009 AT 03:30 PM EDT

Showing all the moves and all the passion that his fans have come to expect, Michael Jackson – sharply dressed in a blazer – danced around the Staples Center stage singing "They Don't Care About Us."

As this video clip shows, Jackson,50, appeared ready to wow London audiences as he rehearsed in Los Angeles on June 23, two days before he died.

"We ran through the whole show the past couple nights," Jackson's 23-year-old Australian guitar player Orianthi tells PEOPLE exclusively. "He was so ready to do it."

And like many who worked with the King of Pop in his final days, Orianthi says she's still in disbelief over his sudden death. "Seeing how happy he was, excited, singing and dancing, it's shocking," she says. "But I'm grateful for the time I had working with him."

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