K'naan headlining TIFF's Bell Lightbox event

Canadian acts Karkwa, Fefe Dobson also on Sunday bill

TORONTO -- Canadian hip-hop sensation K'naan is headlining the opening concert Sunday for Bell Lightbox, the Toronto International Film Festival's new home.

Festival organizers are understood to have kept news of the Somali-Canadian rapper's free TIFF performance tightly under wraps until this weekend at the insistence of Live Nation, which is selling tickets to K'naan's upcoming Toronto date at the Kool Haus theater.

K'naan is best known for his "Wavin' Flag" single that was a 2010 World Cup anthem song.

Also helping launch Bell Lightbox are the Canadian bands Karkwa, the Sadies and Radio Radio, and singer Fefe Dobson.