Brian Ash performs Thursday at Lincoln Park, part of the city of Olean's summer concert series. Two concerts will be held next week at the park. From 6-8 p.m. Wednesday, Sticktights will perform folk and rock, making up for a weather cancellation on the season opening concert May 22. Not Norman will perform classic rock from 6-8 p.m. Thursday. Only eight concerts remain in the series, ending Sept. 11.