Mahasti (مهستی) (Eftekhar Dadehbala) (November 16, 1946 - June 25, 2007) was a legendary Persian Pop and classical singer who was recognized as the "Persian Diva" and "Lady of hearts & flowers". She was the younger sister of another popular Iranian female singer, Hayedeh. Mahasti's voice was discovered by maestro Parviz Yahaghi, a distinguished Iranian composer and violinist. She was amongst a rare group of singers who "started" their careers