Keith Urban will replace Brooks & Dunn at the Canadian country music festival, Countryfest, in Dauphin, Manitoba, on Friday (July 2). Brooks & Dunn were forced to cancel their appearance because of Ronnie Dunn's prescribed vocal rest. The four-day festival begins Thursday (July 1). The lineup also includes Randy Houser, Miranda Lambert, Kellie Pickler, Blake Shelton and many Canadian country artists. Urban's tour calendar already included three Canadian tour dates in July. Brooks & Dunn will resume their Last Rodeo Tour on July 16 in Indianapolis.