The two colossal statues of Amenhotep III that stood before his mortuary temple on the west bank of the Nile at Thebes. The statues were named by the Greeks after the legendary Ethiopian king Memnon, who fought in the Trojan War. One was believed to sing, probably the action of wind through cracks, and became a favorite tourist attraction during the Roman Period, being visited notably by Hadrian and his wife. The statue was repaired by order of Septimius Severus, and it sang no more. The temple behind the statues was heavily plundered by Merenptah, who used many blocks and statues for the construction of his own mortuary temple.
Historical Dictionary Of Ancient Egypt by Morris L. Bierbrier
Ancient Egypt. A Reference Guide. EdwART. 2011.