CNN reported Saturday night a stage collapsed at the Indiana State Fair, killing 4 and injuring at least two dozen fans.  Sugarland was scheduled to appear and tweeted that they're ok and that they're praying for the injured fans.

Sara Bareilles had just finished her performance when the stage collapsed and the weather apparently was a factor.  One witness said a big gust of wind came thru and it knocked down scaffolding and speakers and the whole stage collapsed.
A witness happened to have a camera rolling as the stage collapsed.