Luciano Pavarotti’s opera farewell at the Metropolitan this weekend was a nostalgia-charged event, writes Tim Page. The door has still been left open as to whether the great tenor will come back to opera. “Myself, I hope he packs it in. It has been a glorious career and it might be best to leave before mounting and irreversible infirmities, apparent throughout the evening, overwhelm what remains of his fragile but still magnificent artistry.”