The pair's escape caused panic among the staff when they couldn't be found with the nursing home alerting police of their disappearance.
After an extensive search, the pensioners were found at 3am in the crowd at Wacken Open Air music festival in Germany.
According to local reports, the ageing metalheads were reluctant to leave the party so police had to send them home in a taxi escorted by a police car.
A local police officer Merle Neufeld said: "Both were disoriented and apathetic."
