TORONTO - Bruce Cockburn, Rufus Wainwright, Bela Fleck and two-time Academy Award nominee John Malkovich are among a diverse group of headliners who have been announced in the music program for this year's Luminato festival in Toronto.

Mali musician Bassekou Kouyate and Montreal banjo player Karim Saada will also perform at the fourth edition of the annual multi-disciplinary Toronto arts festival, which will run from June 11-20.

Toronto singer-songwriter Hawksley Workman and Margo Timmins of the Cowboy Junkies are among the musicians who will join Cockburn onstage at Massey Hall in a tribute to his extensive catalogue.

Wainwright's debut opera "Prima Donna" will have its previously announced North American bow during the festival, and the 36-year-old will also launch a solo tour with a show at the Elgin Theatre.

And Malkovich will take to the stage with a starring role as Austrian author and murderer Jack Unterweger in "The Infernal Comedy: Confessions of a Serial Killer," a piece that will feature a series of monologues paired with operatic arias.

Fleck, Saada and Kouyate, meanwhile, will be featured during a free all-day concert at Queen's Park that is being billed as an exploration of Eastern and Western musical traditions.