THE saga of the singing waiters at Piazza Romano appears to have ended on a high note. According to two former employees who had filed a complaint with the Labour Department that they had been paid only half their $8,000 salary, the restaurant came to an amicable settlement with them last Friday night. Mr Ben Aguso and Mr Elver Esquivel had planned to leave for the Philippines last weekend, intending to return to the territory on September 28 to attend a labour tribunal case against Piazzo Romano. But they were contacted by the restaurant manager just before their departure with a surprise offer for an out-of-court settlement. ''The meeting lasted for more than two hours, and there was plenty of haggling,'' said Mr Aguso. ''But we are pleased about the result; it means we can go home and not worry any more.'' He was unwilling to discuss the amount of the settlement they had accepted. Earlier last week, the restaurant settled and renewed contracts with 14 singing waiters who had lodged a separate complaint with the Labour Department for alleged breach of contract.