Brian Wilson is forced to postpone upcoming shows due to emergency back surgery.

The Beach Boys co-founder wrote a touching letter to his “friends” who were planning to come see him on his current “The Final Performances” tour.

“Dear friends,” Wilson began. “As some of you might know I have been having some issues with my back that has very recently gotten worse… My doctors have told me that I need to have surgery immediately. They are optimistic that this will finally relieve the pain.”

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As a result, Wilson and his team have decided to postpone all shows this May, “I know that my agents are already in the process of rescheduling and we will have some of the make-up dates to announce very soon.”

The Canadian date that has been delayed is his Windsor stop on May 4.

Wilson’s show in Victoria this July is still scheduled as promised.

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