Linda Perhacs, the psychedelic folk singer-songwriter behind the cult classic 1970 album Parallelograms, has been reported missing. According to the statement, Perhacs left a residential care facility roughly eight months ago while under the supervision of her legal guardian. Related VideoPerhacs released Parallelograms in 1970 while working as a dental hygienist in Los Angeles. AdvertisementThe new wave of interest brought Perhacs back to recording more than 40 years after her debut. Anyone with verified information about Perhacs’ well-being or a current means of contacting her is being asked to reach Stearns at lstearns@primarywave.com.