Maia Estianty (born January 27, 1976) is an Indonesian musician, actress, model, and entrepreneur. She is one of the singers in the duo Maia and was previously known as the former keyboardist of the duo Ratu. Maia Estianty (born January 27, 1976) is an Indonesian musician, actress, model, and entrepreneur. She is one of the singers in the duo Maia and was previously known as the former keyboardist of the duo Ratu.