FILE - Nancy Wilson, left, and Ann Wilson of Heart perform on opening night of the Heartbreaker Tour at the Cruzan Amphitheater in West Palm Beach, Fla., June 17, 2013. Ann Wilson, lead singer of rock band Heart, says she has cancer. The band is postponing the remaining shows on its Royal Flush Tour. Wilson said in a statement Tuesday that she underwent a surgery to remove a cancerous growth and is recovering steadily, but that her doctors urged her to undergo preventive chemotherapy and take time off from performing. (Photo by Jeff Daly/Invision/AP, File)