	Zarrin has been collaborating with renowned Iranian singers in making over 20 musical albums, as songwriter, amont them, Moein, Aref Arefkia, Salar Aghili, Mohammad Esfahani, Reza Sadeghi, Farzad Farzin, Alireza Ghorbani, Mohammad-Reza Foroutan, Mohammad Alizadeh, Hamid Hami, Mani Rahnama, Reza Bahram and Shahab Mozaffari. He also has composed several film scores and theme music for TV series and movies such as "Foggy Tabriz" and "The Enigma of the Shah".