LEWISTON — The Bates College Folk Festival has had a change in its schedule for Saturday, Feb. 9 starting at 9 a.m. with yoga, followed by the Greg and Jessie Boardman contradance at 9:30 a.m. Also, Tumbling Bones will play at 9 p.m. at the Ronj, 32 Frye St., Lewiston. Friday’s events remain unchanged.