 His works have been performed by the Vancouver Symphony Orchestra, ProCoro Canada, the Canadian Brass, the Winnipeg Symphony Orchestra, the New York Pops, the Hammerhead Consort, and the brass section of the New York Philharmonic.From 1999 to 2004, Gilliland was Composer in Residence with the Edmonton Symphony Orchestra, composing nine major works, including concerti for violin, and two harps.