Grey was born in the village of Mytilinioi in Samos and has three siblings. She was adopted by the Kalaitzis family and grew up in Piraeus.Her first song, 'To Marazi', was recorded in 1952. After the success she achieved, she managed to become the first name in the biggest nightclubs of the time and also to sing with all the great composers of her time. She recorded more than 1,500 songs, until 1996, when she retired from recording and nightclubs. Grey was engaged for five years to Stelios Kazantzidis, and then to Andreas Barkoulis. She was married twice, first to Nikos Iliadis with whom she had two sons, one of them who died in 2021, and to Michalis Papanastasopoulos.