What is the cause of death of XXX?
Hayedeh
Hayedeh (Persian: هایده‎‎), also transcribed as Haideh or Haydeh, born Ma'soumeh Dadehbala (معصومه دده بالا, April 10, 1942 -- January 20, 1990) was a popular singer of Persian classical and pop music with a contralto vocal range.