Gallery: Shania Twain and Gavin DeGraw October 1, 2015Samantha Hollingshead Gavin Degraw performs on Sept. 30 at Nationwide Arena. Credit: Muyao Shen / Asst. Photo Editor Gavin Degraw performs on Sept. 30 at Nationwide Arena. Credit: Muyao Shen / Asst. Photo Editor Shania Twain performs during her "Rock This Country Tour" on Sept. 30 at Nationwide Arena. Credit: Muyao Shen / Asst. Photo Editor Shania Twain performs during her "Rock This Country Tour" on Sept. 30 at Nationwide Arena. Credit: Muyao Shen / Asst. Photo Editor Shania Twain performs during her "Rock This Country Tour" on Sept. 30 at Nationwide Arena. Credit: Muyao Shen / Asst. Photo Editor Shania Twain performs during her "Rock This Country Tour" on Sept. 30 at Nationwide Arena. Credit: Muyao Shen / Asst. Photo Editor Fans cheer during Shania Twain's "Rock This Country Tour" on Sept. 30 at Nationwide Arena. Credit: Muyao Shen / Asst. Photo Editor Shania Twain performs during her "Rock This Country Tour" on Sept. 30 at Nationwide Arena. Credit: Muyao Shen / Asst. Photo Editor Shania Twain performs during her "Rock This Country Tour" on Sept. 30 at Nationwide Arena. Credit: Muyao Shen / Asst. Photo Editor
