Just after the Paris terrorist attacks, Madonna took a moment out of her concert in Sweden to show unity with the people of France in an emotional speech. Now that her Rebel Heart tour has arrived in Paris, she did something even more special to remember the victims. It’s not every day you see a music icon performing at your local tourist attraction, but Madonna is no ordinary pop star: Following her show Wednesday night, Madge, her son David, and her guitarist held an impromptu acoustic concert in the middle of the busy Place de la République. While singing her song “Ghosttown,” she’s heard telling the gathering crowd, “Everybody knows why we’re here. We just want to sing a few songs about peace, just to spread love and joy, and to pay our honor and respect to the people who died almost four weeks ago. And to spread light … we all need it.” She then led a sing-along of “Imagine” in both the victims’ and Lennon’s honor (this week marked the 35th anniversary of Lennon’s death). She also sang “Like a Prayer,” which she’d previously dedicated to Paris.