Concerns have been raised over the safety of folk music legend Linda Perhacs, who has been reported missing after she left a care facility. Linda, who rose to stardom with her 1970 album Parallelograms, was under the supervision of her legal guardian at a residential care facility. Concerns have been raised over the safety of folk music legend Linda Perhacs, who’s been reported missing after she left a care facility. Linda, who rose to fame with her debut album Parallelograms, was in a care facility for a number of years before she was discharged. Jessica Hundley, Linda’s director, added to Rolling Stone magazine that Linda has dementia, and was living in the care facility for several years.