This year’s public activities at the Smoke on the Plains Derby BBQ & Music Fest will include free concerts and access to food trucks. (Courtesy photo) The smells of barbecue and sounds of live music are set to fill Derby this weekend as the Wichita suburb prepares to put on the annual Smoke on the Plains BBQ & Music Fest. The festival, at High Park in Derby, will be held 6 to 10 p.m. Friday, June 12, and 9 a.m. to 3 p.m. and 6 to 10 p.m. Saturday June 13.