About 20 members of the Detroit Symphony Orchestra (DSO) arranged a flash mob inside Ikea on Jan. 12, 2016 to promote their new Neighborhood Concert Series in Canton. Shoppers gathered around, many taking photos and videos with their smartphones, as the DSO brightened up the wintery day with Beethoven’s “ Ode to Jöy.” Gabrielle Poshadlo, DSO Communications and Public Relations Manager said the idea came while brainstorming ways to promote the new Canton concert series.   “We