U.S. President Barack Obama (C) leads entertainers including Bill Cosby (L) and James Taylor (R) on stage in a rendition of happy birthday for U.S. Senator Ted Kennedy (not pictured) during a musical tribute to mark Kennedy's 77th birthday at the Kennedy Center in Washington, March 8, 2009.
U.S. President Barack Obama (C) leads entertainers including Bill Cosby (L) and James Taylor (R) on stage in a rendition of happy birthday for U.S. Senator Ted Kennedy (not pictured) during a musical tribute to mark Kennedy's 77th birthday at the Kennedy Center in Washington, March 8, 2009.
U.S. President Barack Obama waves from the stage to the balcony where U.S. Senator Ted Kennedy (not pictured) is seated during a musical tribute in honor of Kennedy's 77th birthday at the Kennedy Center in Washington, March 8, 2009.
U.S. Senator Ted Kennedy (C) acknowledges the audience, as they sing happy birthday to him, led by President Barack Obama (not pictured), alongside U.S. first lady Michelle Obama and Kennedy's wife Victoria (R) during a celebration concert for Kennedy's 77th birthday at the Kennedy Center in Washington, March 8, 2009.
U.S. President Barack Obama (L) greets U.S. Senator Ted Kennedy (D-MA) during a musical tribute concert in honor of Kennedy's 77th birthday at the Kennedy Center in Washington, March 8, 2009.
U.S. President Barack Obama (C) dances alongside his wife Michelle (2nd L) and Vice President Joe Biden (L) during a celebration concert in honor of U.S. Senator Ted Kennedy's 77th birthday at the Kennedy Center in Washington, March 8, 2009.
U.S Vice President Joe Biden (L), President Barack Obama (2nd L) and first lady Michelle Obama are pictured alongside U.S. Senator Ted Kennedy (R) during a celebration concert in honor of Kennedy's 77th birthday at the Kennedy Center in Washington, March 8, 2009.
U.S. President Barack Obama (L) and first lady Michelle Obama laugh with U.S. Senator Ted Kennedy (D-MA) during a celebration concert in honor of Kennedy's 77th birthday at the Kennedy Center in Washington, March 8, 2009.
U.S. President Barack Obama (L) and first lady Michelle Obama laugh with U.S. Senator Ted Kennedy (R) during a celebration concert in honor of Kennedy's 77th birthday at the Kennedy Center in Washington, March 8, 2009.