The tables were turned on Aretha Franklin at Brasserie Ruhlmann in Rockefeller Center the other night before she left town for a Hamptons vacation. The Queen of Soul — who stole the show at the 1998 Grammy Awards when she was a last-minute replacement for Luciano Pavarotti and sang “Nessum Dorma” — was serenaded by a singing member of the wait staff who gave a rousing performance of the famous aria from Puccini’s “Turandot.” “I was impressed and pleasantly surprised,” said Franklin. “He needs an agent.”