Stephen Harper once said that meeting celebrities wasn't his ``shtick'' -- but it seems he's had a change of heart. The prime minister is granting an audience to U-2 frontman Bono, who's coming to Ottawa on Monday. Bono, who's known as much for his humanitarian efforts and AIDS activism as he is for his music, will also meet with N-D-P Leader Tom Mulcair and Liberal Leader Justin Trudeau.