Singer Linda Ronstadt has canceled her September concerts, including two shows at Bass Hall, scheduled for Sept. 14-15, the venue announced Thursday. "It was Ms. Ronstadt's decision to cancel her September date," said Paul Beard, managing director of Bass Hall. "Our role was to accept that outcome and respond as we would to any other cancellation." Two other Ronstadt concerts in Fayetteville, Ark., scheduled for Sept. 17-18 at the Walton Performing Arts Center, were canceled as well. The cancellations come on the heels of her July 17 concert in Las Vegas during which she championed filmmaker Michael Moore, whose new...