[custom_adv] Ma'soumeh Dadehbala was born on 10 April 1942 and was the elder sister of the singer Mahasti.Her professional career began in 1968 as a singer on a Persian traditional music program in Radio Tehran called "Golhâye Rangârang" directed by Davoud Pirnia. [custom_adv] Hayedeh studied Avaz (Persian vocal music) with the Persian violinist and composer Ali Tajvidi."Azadeh" (1968), which was composed by Ali Tajvidi, and was written by Rahi Moayeri, was Hayedeh's first official hit and debut also. It was first performed in 1968 on Radio Tehran with the Gol-ha Orchestra. In this year she released another titled Raftam (1968). [custom_adv] In the 1970s, Hayedah added Persian pop music to her classical Persian repertoire. In this period Hayedeh worked with several songwriters, such as Fereydoun Khoshnoud, Jahanbakhsh Pazouki, Anoushiravan Rohani and Mohammad Heydari. "Bezan Tar", "Gol-e Sang", "Nowrouz Aamad", and "Soghati" were among her works during this period. [custom_adv] On 29 August 1978, shortly before the Islamic Revolution in Iran, Hayedeh immigrated to the United Kingdom. She stayed there for three years and moved to the United States in 1982 to continue her career.