Masoumeh Dadehbala?(Hayedeh)?was born on April 10, 1942, in Tehran, Iran and passed away on January 20, 1990, in San Francisco, CA, USA. She is the older sister of Mahasti. Hayedeh’s professional career began in 1967 at the age of 26 as a singer on a Persian traditional music Tehran Radio program called Golhaayeh Rangarang. She studied Avaz with the famous Persian violinist and composer Ali Tajvidi. Azadeh which was composed by music by Ali Tajvidi, and was written by Rahi Moayeri was Hayedeh’s first hit. In the 1970s Hayedeh added Persian pop music to her classical Persian repertoire. On August 29, 1978, Hayedeh emigrated to the UK. She stayed there for 4 years and moved to the USA in 1982 to continue her career and live close to her sister Mahasti. On January 20, 1990, some hours after a concert at the Casablanca Club in San Francisco, California. Hayedeh died from a heart attack at the age of 47. Hayedeh Legendary Persian Diva, a 90 minute documentary about Hayedeh’s life directed Pejman Akbarzadeh was screened on January, 24 2009 in Amsterdam.

Albums: Gol Vaajeh, Shabe Eshgh, Sogand, Bezan Tar, Ay Zendegi Salam, Shanehayat, Nashanideha, Kharabati, Ya Rab, Padeshaheh Khooban, Ruzhaye Roshan, Shahre Ashoub, Ghesseye Man, and Aroosak.