He was born to an Iranian Father and a French mother in 1966 in the city of Toulouse in France. He has studied music (piano, vocal and theory) along with engineering and marketing. Since 1977 he has made around 150 pieces for Iranian television advertisements, with the cooperation of Reza Asgharzadeh, his assistant since 1995. He has made soundtracks for film, short films as well as art documentaries. He initiated a traditional Iranian music band (Aria Music) in 1996. He has also been involved in Baroque music concerts in Tehran and India. He further established the Nour ensemble. In the summer of 2004, Nour appeared in a second musical documentary, this time filmed at the Palace of Ardashir in Firouzabad. The arrangements of Journey (2001, Hermes Records) is also among his musical activities. In 2003, Rezai won the first prize of the Avignon Film Festival for the best Film Music. Since then, he has concentrated on writing music for films and on developing the Nour ensemble.
Nour ensemble is an Iranian music ensemble under Rezai's leadership, whose repertoire focuses on medieval, baroque, Kurdish and Persian vocal music. The Noure ensemble has been featured in a documentary produced by the television network Arte in 2002 and has performed in concerts in France, Iran, Belgium, the Netherlands, South Korea and Austria.
The ensemble was founded in 2000 and is composed of nine artists, French, Kurdish and Persian, singers and instrumentalists. The group mission is to combine the Iranian musical tradition and European musical tradition and to reinterpret traditional Persian, Kurdish and European repertoire.