 Heart's Ann Wilson revealing she recently underwent surgery for cancer. In a statement, the Rock and Roll Hall of Famer said she's feeling great after the successful operation, but her doctors have advised her to undergo a course of preventative chemotherapy. In May, Wilson and her sister Nancy announced Heart's 2024 European Summer Tour had been cancelled. Ann said the doctors have instructed her to take the rest of the year off from performing so she can fully recover. She added she plans to return to the stage next year. Now.