In an interview with AARP to be published next week, the woman who gave us “You’re No Good†and “It Doesn’t Matter Anymore†revealed that she has been diagnosed with Parkinson’s disease. A post on the organization’s website explains that 67-year-old Ronstadt “began to show symptoms as long as eight years ago,†and now often uses walking poles and a wheelchair to get around. Making things even worse, Ronstadt explained that, “No one can sing with Parkinson’s disease. No matter how hard you try.â€