Tim McGraw has some disappointed fans in California. The country superstar has been forced to cancel the final shows of his Shotgun Rider Tour after doctors placed him on vocal rest.

McGraw broke the news in a post to Facebook on Friday (Sept. 18), revealing that he would be unable to play his concert that night at the Shoreline Amphitheatre at Mountain View in Mountain View, Calif. and his Sept. 19 show at Irvine Meadows Amphitheatre in Irvine, Calif.

“This is so disappointing to me. We’ve had such a great summer, and I was looking forward to this final weekend with the fans in California,” he says. “I appreciate the support and look forward to coming back soon. The word ‘can’t’ is just not in my DNA. If there was any way I could sing, I would do it.”

According to the post, fans can receive refunds for the canceled shows through their original point of purchase.

McGraw recently announced the upcoming release of his 14th studio album, Damn Country Music, which is due Nov. 6. The lead single from the project, "Top of the World," is currently at country radio. The album — which McGraw co-produced with longtime collaborator Byron Gallimore — also features collaborations with Big & Rich on "California" and McGraw and Faith Hill's daughter, Gracie, on "Here Tonight," which the pair debuted live at McGraw's recent concert in Nashville.

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