Classical sounds as well as contemporary music by Coldplay will waft through the air for spectators listening to an orchestra’s annual spring concert. The North Georgia Chamber Symphony Inc. will play all 20th century music at 2:30 p.m. Saturday, May 17, at Westminster Presbyterian Church, at 1397 Thompson Bridge Road in Gainesville. Joining the orchestra will be cellist Ismail Akbar, who will play M.L. Daniels “Sakura,” a piece written for a cello solo and a string orchestra.