Canadian Prime Minister Stephen Harper, center, reacts to a standing ovation after he sang and played The Beatles song "With a Little Help From My Friends" on the piano during a surprise appearance at the National Arts Centre Gala in Ottawa, Ont. , Saturday Oct. 3, 2009. He is flanked by guitarist Richard Linke, left, and  cellist Yo-Yo Ma, right, and percussionist Phil Nolan, far right. AP Photo logo AP Photo 28 months ago

Canadian Prime Minister Stephen Harper, center, reacts to a standing ovation after he sang and played The Beatles song "With a Little Help From My Friends" on the piano during a surprise appearance at the National Arts Centre Gala in Ottawa, Ont. , Saturday Oct. 3, 2009. He is flanked by guitarist Richard Linke, left, and cellist Yo-Yo Ma, right, and percussionist Phil Nolan, far right.