"We will not forget them," the British singer told the crowd in French after a minute's silence for the victims.
"Tonight we have two tasks to achieve - first to remember those who lost their lives in the attack, and then to celebrate life and music in this historic place."
He began the emotionally charged concert with his song "Fragile", singing: "Nothing comes from violence and nothing will."
Many in the crowd at the popular rock venue -- where jihadists armed with guns and suicide bombs struck on November 13, 2015 -- wept during the first song.
"I'll send an SOS to the world," he sang. "Only hope can keep us alive.
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